
I have two 88/50s, neither is direct from a distributor. The one on the left has a smooth round surround on the keyway. The other seems to have been machined, and there is also a sign of a centre punch mark. The smooth surround can actually be rotated, the machined one seems jammed solid, and seems not as tightly fitting to the body, to the extent that I can just see past the edge into the chamber beyond.
I just wonder if anyone else has come across this lock, and which version they have, and any theories as to why the right hand one looks like is does. I have tried to unscrew the machined surround but it won't shift for me.
By the way the one on the left is cut away on the other side.