David Thanks for adding so much valuable material in our Wiki! Regards. LP On time: Do you have any pictures of the original 1949/1950 Leningrads? One was sold at ebay around 2004.
Unfortunately, I do not own any 1949/50 Leningrads. I was shown one by a collector some years ago at Photokina in Germany. I did take a photograph at the time and I will do my best to find it.
I have been unable to find my original negative of the GOI Leningrad, but I have found a small black & white scanned image that I used for the RCCC Data Sheets. If I find the original, I will scan it and post it in the Wiki Catalog.