Found this at a local estate sale after seeing a pic on the craigslist advert. I shot over there rapido and wow, was I surprised it was still there!! No key, and not currently working, but family said it did work at one time. Cant wait to get inside. I dont think the lock is original, but I'm a little hesitant to drill it. My Locksmith tried all his (100 or so) old duo keys on it and also tried picking it for an hour, with no luck. Says its a high security hard to pick lock.
Has anyone seen a backdoor lock like this, with the circular convex cover? What is an original lock for this machine?