Vintage Soviet Vostok Amphibia Mechanical 39mm Nato Strap Screw In Crown - Working 

This is a rugged Soviet produced diver's watch, that I purchased last year from the Ukraine, and just haven't worn it enough to justify keeping it. It is a mechanical hand winder with a screw in crown, which in its day would have given it some degree of water resistance that I certainly wouldn't trust today. 

Once wound it runs perfectly happily as it should for a full day, having apparently been serviced in Ukraine before I bought it late last year. I took that on trust - but must note that I can not speak to this watch's service history.

It wears pretty large, measuring 39mm across but with a lug to lug width of 47mm - so having small wrists I've only worn it about once since buying it.

There are in fairness plenty of these available still in Eastern Europe, but this is priced to sell in the US, as is. I will ship within 24 hours of payment being received.