These padlocks are still a favorite of mine, although I missed my opportunity to bid on this one.
VERY NICE AND COLLECTIBLE VINTAGE US. TREASURY COMBINATION LOCK VINTAGE 1876 PATENT DATE CLARKE COMBINATION LOCK CO. MADE IN BALTIMORE MARYLAND WE HAVE THE COMBINATION. FROM WHAT I AM AWARE OF THE COMBINATION CAN BE CHANGED. STAMPED U.S. TREASURY ON BACK TESTED IN GOOD WORKING CONDITION - eBay (29 Sept 2012)
This padlock had a high bid of $595 (Plus Free Shipping).