I have 3 x Champion pancake locks - one with a key, and 2 without keys. One of them without a key is so black/old/disfigured, I have often mused that I should open it and make a key for it.
Unfortunately, I am merely a collector and not a locksmith, so have no idea at all as to how I would open it safely and get key blanks to make a working key. But that it can be done has sparked my interest yet again…