Another like-new Poljot Sturmanskie with cal. 31659 movement and chrome-plated case w/rotating bezel.
You are unlikely to find a cal. 31659 movement inside a chrome-plated case, round or square, post-1992.
The Sturmanskie case back remained relatively unchanged throughout it's history therefore I'm limiting the number of repetitive depictions; all Sturmanskie/Aviator chronographs featured on this web site have a "Sturmanskie" stamped case back.