Soviet one will be an XB3 Rekord, I think and pretty sure it is 70s with those lugs.
It might have the same odd sizing as my 80s one, which is 26mm steerer, 27mm crown race, 30.4mm cups and bottom bracket with right-handed threads on both sides and Campag tapers. Nothing a bit of mix and match can’t resolve when it comes to it, but try and look after the originals.
Soviet one will be an XB3 Rekord, I think and pretty sure it is 70s with those lugs.
It might have the same odd sizing as my 80s one, which is 26mm steerer, 27mm crown race, 30.4mm cups and bottom bracket with right-handed threads on both sides and Campag tapers. Nothing a bit of mix and match can’t resolve when it comes to it, but try and look after the originals.