Pick Your Poison:
Version 1: Honpo 187 - Best case, crystal, dial, proper engraved he valve but worst movement - first generation A7750. It is no longer sold by dealer. Has to be bought in secondhand market and may be difficult to find.
Version 2: 7750 187 - Inferior to above but has newer and more reliable A7750. Readily available from most dealers.
Version 3: 7753 187 - Proper movement so working quickset date button. Case is based off of version 2 but IMHO not as good. I know King sells this one. I don't know about anyone else.