★Same model as JNR (Japanese National Railways) practical pocket watch★ ★While there are many of the last-generation 6110 models★, this is the final, hand-wound 6310 model for sale❣️ These are few in number★ and highly sought after by pocket watch enthusiasts❣️ ★Moreover, 80% of the 6310 models are the 21-jewel version, and ★the 17-jewel version of the 6310 model for sale★ is extremely rare❣️ (In my 30+ years of collecting vintage watches, I've only seen it a few times❣️) ★I've been displaying it as part of my collection, but I have multiple of the same model, so I'm offering it for sale❣️ ★In the operational check before listing, it was running well enough for everyday use❣️ (Hacking function also OK) ★The exterior is miraculously in pretty good condition❣️ (The case back has few scratches, which is typical for pocket watches❣️) ★Extremely rare, hand-wound final model 6310❣️ Moreover, it's the 17-jewel version❣️ It's in working order, and I'm offering it at a low price with free shipping, so pocket watch enthusiasts, I think it's time to go❣️