Most vintage Casio watches are worth about $15-60. Casio has made digital and analog quartz watches by the hundred million since the 1970s, and the ordinary ones from the 1980s and 1990s, the F-91W, the A158W, the W-series sports watches, the Databank calculators and the plain analog dress watches, sell for the price of a used watch. A smaller group sells for real money: the first G-Shock, the DW-5000C of 1983 ($800-2,500 clean and working), the screwback DW-5600C and DW-5200C of the 1980s ($150-2,000), the early Frogman divers ($500-2,000), the 1980s scientific calculator watches like the CFX-400 ($400-1,000), the first Casiotron watches of the mid 1970s ($500-2,000), and the limited collaboration G-Shocks of the 2000s ($300-1,500). Within every model, a Japan-made example with its original resin, a working backlight and a clean screen sells for several times a worn one, and the caseback tells you most of what you need.
The number to find is the module number: three or four digits in square brackets on the caseback, such as [593] on an F-91W or [691] on a DW-5600C. It identifies the electronics inside, and because Casio changed modules over the years, it dates the watch more precisely than the model name.
Quick answer
- Typical: $15-60 for 1980s-2000s F-91W, A158, W-series, Databank and plain analog Casios in working condition.
- Valuable: DW-5000C $800-2,500; DW-5200C and DW-5600C $150-2,000; early Frogman $500-2,000; CFX-400 and C-80 calculator watches $150-1,000; Casiotron $500-2,000; 2000s collaboration G-Shocks $300-1,500.
- The module number in brackets on the caseback, plus "JAPAN" or "MADE IN JAPAN", dates and places the watch.
- Original resin, a working light and a clean screen are most of the value. Crumbling or replaced bezels and straps cut it sharply.
How to identify and value a vintage Casio, step by step
- Read the caseback. Every Casio from about 1980 onward has the model number (F-91W, DW-5600C, CA-53W) and the module number in square brackets stamped on the back, with WATER RESIST, the case material and the country. Write both numbers down. The model names the watch; the module dates it.
- Date it from the module. Modules were numbered roughly in sequence. Numbers under about 500 are early 1980s; 500 to 1000 are mid to late 1980s; 1000 to 2000 are the 1990s; 2000 to 3000 are the 2000s; 3000 and up are 2010 onward. The same model carried different modules over its life: an F-91W with module 593 is the long-running version, and a DW-5600E with module 1545 is a 1996-2000s watch while one with 3229 is from the 2010s onward.
- Read the country. JAPAN or MADE IN JAPAN on the back marks the earlier and more collected production; KOREA, MALAYSIA, THAILAND and CHINA followed through the 1990s and 2000s. A Japan-made F-91W or A158 from the early 1990s sells for several times a current one. Casio still makes some watches in Japan, so the stamp is a clue, not a date on its own.
- Test every function. Set the time, run the stopwatch, set and trigger the alarm, press the light. A dead backlight, a screen with missing segments or dark bleeding at the edges, and buttons that need force are all deductions, and a watch that does not run on a fresh battery is worth parts unless the model is rare.
- Check the resin. G-Shock bezels and straps from the late 1980s and 1990s go brittle and crumble. An original bezel with crisp lettering is a large part of a vintage G-Shock's value. Replacement bezels and straps are sold for most models and make a good user, but collectors price an original-resin watch far above a replaced one, and they can tell by the lettering and the fit.
- Look inside the battery hatch if the back comes off. Battery leakage leaves green and white corrosion on the contacts and the module. Light corrosion cleans; corrosion into the circuit board usually does not.
- Check for the box and papers. Casio sold most watches in a plain box or a plastic clamshell with a tag and a small manual. For a DW-5000C or an early Frogman, the box and tag add 20-50 percent; for an F-91W, a new-old-stock Japan-made watch in its sealed clamshell is what draws a real premium over a used one.
- Search sold listings by model and module. Many Casios have been in production for decades, so a search by model name alone shows new watches next to vintage ones. Add the module number and the country to find the right comparisons.
What vintage Casios sell for
Prices are for working examples with original resin, a working light and a clean screen as of late 2026. A worn or replaced-bezel example sells for a third to a half.
| Watch | Years and module | Typical sold price | Notes |
|---|---|---|---|
| F-91W, current production | 1989 onward, module 593 | $15-25 new, $10-20 used | The best selling watch ever made; most are current |
| F-91W, Japan-made, early 1990s | Module 593, caseback JAPAN | Roughly $50-150, though sales are thin | New-old-stock in the clamshell brings more |
| A158W, A168W, A159W steel digitals | 1980s onward, modules 593 and 1572 | $20-50; Japan-made $50-120 | Gold-tone versions similar |
| W-series sports (W-800, W-86, W-59) | 1990s onward | $15-40 | Users |
| CA-53W Databank calculator | 1980s onward, modules 437 and 3208 | $20-40; Japan-made 1980s $60-150 | The Back to the Future watch; the CA-50 and CA-51 from the early 1980s $80-250 |
| C-80 calculator | 1980, module 133 | $100-300 | The first popular calculator watch; the 1983 touch-screen TC-500 $150-400 |
| CFX-200 and CFX-400 scientific calculator | 1983-1985 | $200-1,000 | The CFX-400 is the most sought calculator watch |
| Databank Telememo DBC-610, DB-31, DBC-150 | 1990s | $30-120 | Japan-made and boxed at the top |
| Casiotron | 1974-1976 | $500-2,000 | Casio's first watches; the QW02 and the first autocalendar models highest |
| Game watches (GM-10, GD-8, CA-901) | 1980-1983 | $150-500 | Working buttons are essential |
| G-Shock DW-5000C | 1983-1985, module 240 | $800-2,500 | The first G-Shock; screwback, made in Japan; original resin decides the range |
| G-Shock DW-5200C | 1984-1986 | $800-2,000 | The "Hero" model |
| G-Shock DW-5600C | 1987-1996, modules 691 and 901 | $150-450 | Screwback; made in Japan and later Korea; the Speed movie watch |
| G-Shock DW-5600E | 1996 onward, modules 1545 and 3229 | $30-70 | Still in production; early Japan or Malaysia examples $60-120 |
| G-Shock DW-6900, first generation | 1995 onward, module 1289 | $80-200 | Current ones $60-100 |
| G-Shock DW-5900, DW-5700C, DW-6100 | 1987-1993 | $200-600 | Triple graph, round screwback and thermometer models |
| G-Shock Frogman DW-6300 | 1993-1995 | $800-2,000 | The first Frogman; yellow versions highest |
| G-Shock Frogman DW-8200, GW-200 | 1995-2010 | $300-800 | Titanium; original resin matters |
| MR-G MRG-100, MRG-1 | 1996-1998 | $400-1,200 | Metal G-Shocks; the first full-metal collector line |
| G-Shock collaborations (Bape, Stussy, Eric Haze, Nigo) | 1998-2010 | $300-1,500 | Boxed and unworn at the top; some reach $2,000+ |
| Baby-G, 1990s | 1994 onward | $20-80 | Limited colors and boxed sets $100-300 |
| Pro Trek and Pathfinder, 1990s | 1995 onward | $40-150 | |
| Oceanus | 2004 onward | $200-600 | Titanium, solar, radio controlled |
| Analog quartz dress watches, any era | 1980s onward | $10-40 | Common; gold-tone ones worn through at the edges |
The first three rows and the last row cover most Casios in drawers, and the honest advice for those is a battery, a wipe and a fair local listing. The G-Shock and calculator rows are where a watch from a 1980s wrist can surprise you, and where the module number, the country and the condition of the resin matter.
Condition and what adds or subtracts
| Factor | Effect on price |
|---|---|
| Original bezel and strap with crisp lettering, not cracked | The baseline for the G-Shock prices above |
| Replacement bezel and strap, modern Casio parts | About 30-50 percent of original on 1980s-90s G-Shocks; a good user |
| Aftermarket resin or metal bezel | User value only |
| Backlight dead | Deduct 10-30 percent; some lights can be repaired, some cannot |
| LCD bleed, missing segments, dark corners | Deduct 30-60 percent; a replacement module from a donor is the fix |
| Battery corrosion into the module | Parts value for a common watch; a project for a rare one |
| Scratched or chipped glass | Deduct 10-25 percent; mineral glass can be replaced on most models |
| Buttons stiff or missing | Deduct 20-40 percent |
| Original box, tag and manual | Add 20-50 percent on collector models; new-old-stock sealed examples at multiples |
| Japan-made where later production moved elsewhere | Add 50-200 percent on common models |
| Gold-tone plating worn through | User value only |
The same rules of originality and working function decide the price of the other everyday watches of the period; our guides to vintage Timex and vintage Seiko watches cover the mechanical and quartz pieces that so often share the drawer, and how much is my watch worth covers the general method.
Fakes and what to check
The F-91W is one of the most counterfeited watches in the world, and G-Shocks are widely copied. On an F-91W, the copies give themselves away in the caseback stamp (wrong or missing module number, soft lettering), the light (the genuine one is a dim amber-green bulb at the left; copies often have a bright blue or white LED), the button feel, and the printing on the bezel. On a G-Shock, check the module number against the model, the depth and finish of the caseback engraving, the fit of the bezel, the quality of the LCD and the price: a new DW-5600E sells for about $50-70, and a listing for a fraction of that is a copy. Copies are worth nothing and cannot legally be sold as Casios.
How WorthPic reads Casio photos
WorthPic runs on the newest and most capable AI model available, tuned for exactly this kind of identification. A Casio is identified from its face, and dated from its back, and that is how it reads the photos: from the front it names the model and generation from the case shape, the screen layout, the bezel printing and the button arrangement; from the caseback it reads the model number, the module number in brackets and the country, and from those it places the watch in its production window. It judges the condition that collectors price: whether the resin is original and intact, the state of the screen, the glass and the plating, and whether the box and tag match. It then gives an honest range for that watch in that condition, splitting original from replaced-resin where the photos leave the question open. What it cannot tell from a photo is whether the light works, whether the alarm sounds, or whether there is corrosion under the caseback, and it asks for the shot of the lit screen and the open back that would settle those. It identifies and estimates. It does not authenticate or vouch for a watch; a DW-5000C, an early Frogman, a Casiotron or a boxed collaboration that appears to be worth over about $500 belongs with a specialist G-Shock or vintage digital dealer, or a watch auction house, before it is sold.
Common mistakes
- Pricing a current-production watch as vintage. An F-91W made last year and one made in 1991 look the same from the front; the caseback country and the stamp style tell them apart.
- Replacing a crumbling bezel before photographing. Keep the original pieces, however rough, and include them; collectors pay for them.
- Treating any square G-Shock as a DW-5000C. The 5000C has a screwback and module 240; the common DW-5600E has a four-screw back and a different module.
- Scrubbing a caseback with abrasives. The module and model stamps are shallow, and a polished-off stamp loses the identification.
- Leaving a dead battery in the watch. Leakage destroys the module over a few years; take it out if the watch is going into a drawer.
- Assuming a working calculator watch is common. The 1980s scientific and touch-screen models are scarce working, and a dead one is worth a fraction.
What to photograph
- The face, straight on, with the screen lit if the light works. This is the photo that identifies the model and shows the screen condition.
- The caseback, straight on and in focus, so the model number, module number and country can be read. This is the photo that dates it.
- The bezel and strap close up, for cracks, crumbling and the crispness of the lettering, so original and replaced can be told apart.
- Each side of the case, for the buttons and the plating.
- The battery hatch or the inside of the back, if it comes off easily, for corrosion.
- The box, tag and manual together.
When to get it looked at in person
A common Casio does not need an expert; a new battery from a watch shop and an honest listing is the whole process. For a DW-5000C, a DW-5200C, an early Frogman, a Casiotron, a scientific calculator watch or a boxed collaboration, the professional route is a specialist dealer in vintage digital watches or the collectors who gather around the G-Shock forums and groups, who know the modules, the resin and the realistic prices, and will say from a photo whether a bezel is original. A watch auction house handles the rarest 1980s G-Shocks and the first Casiotrons. Casio's own service centers can confirm that a module is genuine when they service a watch, though they do not appraise. The electronics from the same decade follow the same rules, and our guide to the vintage Game Boy covers the handheld that often sits in the same box as the calculator watch.