Mechanical Automatic Wristwatch SEIKO 5

This is a SEIKO 5 (mechanical automatic). I own several wristwatches. Perhaps because I majored in mechanical engineering, I wanted a mechanical automatic watch and bought this about 20 years ago.

I used it once or twice, but I wanted to take good care of it, so I've kept it in a drawer ever since.

The large numbers on the dial make it very easy to read, which was the reason I bought it.

I've forgotten how much I paid for it.

I checked about 3000 images of men's automatic wristwatches online, but I couldn't find the exact same one.

The closest design I could find was the Seiko Import SEIKO 5 SNK38k1, which cost 39,000 yen.

There is no box or instruction manual.