Servicing lenses

There’s nothing like completely dismantling 1950’s Soviet lenses for servicing to relax on a Tuesday night! I’ve already done this to a 1959 Индустар-26M to clean off the old tractor grease that had begun to turn solid & replace it with some nice new white lithium grease, but tonight’s Индустар-50 was the first time that I’ve actually dismantled the optics & cleaned each individual element.

The rings are soaking in a certain soft drink over night to clean them up nicely ;)