So I have this, acquired somehow or another 5-6 years ago:
Mosque dial (green variant) labeled 17j, CCCP, mated to a 420 Amphibia case and handset with a Cyrillic back and a dot-dash bezel:
Inside spins a 2416B movement, which, though this photo is a bit blurry, is marked RUS. I haven't had this watch apart, but I believe (because I've heard it turn over) that the date wheel is still present, spinning beneath the dial.
I don't discount the possibility that the watch was born this way, some time in the strange 1990s. Just the other day someone showed a similar Amphibia/Islamic dial hybrid in WRUW. But that's unprovable, and the watch is objectively mismatched (CCCP dial and jeweling don't match movement, etc.) on several axes.
So what do I do? If I were to attempt to de-franken this, from what I can tell I have all the components of a perfectly good post-Soviet 420 Amphibia except for the dial. So one temptation is simply to buy a new dial from Meranom or similar, probably, in rough order of preference, a blue Scuba Dude, a black Scuba Dude, or a Zissou (as I lack all these classics). But will I be creating a new mismatch by doing this?
I think the question boils down to, is there any apparent difference between an early post-Soviet (RUS marked) 2416B and a contemporary 2416B? If there is, then perhaps I need to hold out for an early post-Soviet dial, to match the age of the movement.
A second question would be, how much have the dials I mentioned changed in the post-Soviet era?