Here's the deal, I've been asking around, and talking to several people, some of which are very known, knowledgeable and know their facts here on RFF, and no one has seen this before.
I recently came over a DR / Rigid Sumimcron optical piece (no focusing unit, will probably buy RIGID kind). The thing is though, it has a serial number of 2.5million.
Now, by all accounts that I can find, they stopped making these at 2.3 million, Tom A mentioned that he has seen that they've made a special batch of a few hundred to the army that has a serial of 2.4 million, but 2.5? Never.
Trying to source more info on the open forums, anyone seen this ever before? It's in mint condition by the way, completely un-used, basically new-old stock. It was a reserve lens for a newspaper company in sweden that used these as a macro lens but this one was never used.