Just don't assume this, I have even seen Chinese komandirskie knock offs.
Also, fake dials do exist.
As I said, a lot of components are swappable between different Vostok models (even modern ones): it is quite easy to create frankens. The safest bet for a newbie is to get the old Vostok catalogs check what you buy. But not all were pictured on catalogs, so... In any case be prepared to look at 10th or 100th of watches (for the collectible ones) before seeing a really good one.
Browsing the Russian Watches subforum on Watchuseek is a very good starting point, usually. Lots of knowledge about FSU watches there.
For the Komandirskie/Amphibian line, a few different bezels existed and are acceptable, depending on the model. They are interchangeable.
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