I'm not sure if this is helpful, but I just wanted to show you this curiosity that I came across and purchased a few months ago.Yes, you're absolutely right! Thanks to all who have helped me so far trying to solve and explain the "strange behaviour" of my 2414. I haven't come to a conclusion so far, lacking time (and courage) to completely disassemble (and re-assemble) the movement. So please be patient, it is still on my to-do-list for the coming weeks.
In the meantime, a different (and not so technical) question has aroused: Does anybody know of a higher caseback allowing to install an automatic movement in an old Amphibia or Komandirskie case (the smaller caseback diameter with only one pin)?
As always, thanks in advance for your help!
The case was a curious asymmetrical Komandirskie style brass case but within was a 2416b automatic movement. On closer inspection on its arrival I noticed that the automatic rotor was actually smaller than a normal rotor, but on inspection of the manufacturing it looks like it was done at the factory as the parts were unique (not simply shaved down). The case back has the same dimensions as a regular Komandirskie single lug case back, but it has the height of a regular Amphibia case back, I'm not sure if this is a factory manufactured part.
It's a very curious collection of parts. Perhaps the factory meddled in some prototypes, perhaps for an automatic Komandirskie. The case back is engraved with the year 1980 which makes it even more curiouser. So many thoughts, lol.