This beauty is one of my best recent finds. It's a Vostok Amphibia with the early automatic movement (21 jewels instead of 31), black bezel and special case. I already own two of these leather cases, but never found one with the "frogman" engraved!
The watch looks very beautiful, and in perfect conditions (only the lume is very weak). The strap would look apparently not original (this case was designed for bracelet), but it has engraved "BOCTOK CCCP" on the back. So it is an original strap for the export.
The watch looks surprisingly modern on the wrist. The export strap was designed very well!
With an older brother.