I can understand that Frank.At the moment I am trying to sort my Kievs out. To clean them I removed the lenses. Now I discover that my sole copy of the master list was stored on a computer that crashed. Fortunately I have photographed them all so matching lenses to cameras ain't that difficult. But I have ended up with a spare 1949 ZK lens, or I might have lost a camera. My wife has promised to sort it out.
Useful list there, thanks Max.
Cheers,
Brian.