About $9 to $14 as of 2026-11-09, based on 4 recent eBay sales with a median of $11.
Recent eBay sales: $19 (Casio F-91W Digital Watch-Black Classic Alarm Chrono-Brand New Boxed…); $15 (GENUINE Casio Watch Classic Sports Digital-F-91- 1YER-BOXED- 2 YR…); $7 (F91W Classic Digital Watch Resin Strap Stopwatch Chronograph Sport…); $5 (F91W Classic Digital Watch Resin Strap Stopwatch Chronograph Sport…).
Running and keeping time is the baseline. Not running, or "for parts", is a different, much lower market. Original dial, hands and crown add value; replacement or aftermarket parts lower it, especially on collectible models. Box, papers and a recent service raise the price. So does a bracelet or strap that came with the watch.
Snap 2–4 photos and Guestimator prices yours from what's selling now, then lists it on your own eBay account. You check every word first.
Guestimate mineGuestimates are market estimates from public eBay data at the date shown, not certified appraisals. Prices change; check before you buy or sell. As an eBay Partner, Guestimator may be paid a commission when you buy through links on this page.