All of these keys are in nice condition. 1 is marked AOK. Sizes are: 8, 8, 8, 7/32" & 7/32". The two largest are obviously for winding something, but I   don't know exactly what. Thanks for looking - I f you have a few minutes, I have some other clock keys listed among the items in my Ebay store.  (Lot 3  LR9. 526 E)