Push Key 6-Lever Brass Padlocks (Pancake) - Yale

Click to Enlarge Image Yale Prototype - No Pins. 2 1/2" diameter. A Paracentric pin tumbler padlock. There is no embossing on the lock. Mfg by: Yale & Towne Mfg. Co. (Y-960).   431
Click to Enlarge Image "YALE" - Left Pin. 2.328" diameter x .667" deep. Mfg by: Yale & Towne Mfg. Co. More... (Y-160).  
"Courtesy David Heuermann"
420
Click to Enlarge Image "YALE" - Left Pin - High Shackle. Mfg by: Yale & Towne Mfg. Co. More... (Y-640).  
"The Jon Kolozvary Collection"
421
Click to Enlarge Image "YALE" - Left Pin - High Shackle - 5 Levers. This padlock actually has 5 levers. Mfg by: Yale & Towne Mfg. Co. (Y-720).  
"The Bob Dix Collection"
427
Click to Enlarge Image "YALE" - 2 Pins. Mfg by: Yale & Towne Mfg. Co.  More...  (Y-800).   422
Click to Enlarge Image "YALE" - 2 Pins - High Shackle. Mfg by: Yale & Towne Mfg. Co.   More...  (Y-880).   423