Molinja 129ЧС 55M 24 hour clock, updated 15.08.2021
Timepieces > J - R > Molinja
under construction
web sources:
https://uhrforum.de/threads/borduhr-mit-geschichte.221180/
https://www.vintage-time.de/forum/index.php?thread/3524-russische-mig-borduhren/&postID=46097
http://forum.watch.ru/showthread.php?t=66842
I find this clock very interesting as it has a 19 pin connector on the back for several switch functions and internal heating.
Sources: DGC Jahresschrift Band 57, "Russische Uhren für Flugzeuge" Johannes Altmeppen
z.B. in Tu155, IFF Identification Friend Foe.
from Tscheljabinsk, movement 129 ЧС is based on the 122 ЧС