Just bought a lock collection, clean em or not??

[fir469]

I just bought these 41 locks with a few keys for $40... I plan to make a display case of these plus other locks and keys I have found. One pic is the lot of them, the other pic is of a pair of locks both identical, one I cleaned with Noxon polish and the other is as they came. Do I clean them or not?? I like patina on brass and copper, but it seems most of them are dirty, greasy, oily rather then patina'd... clean or not to clean??