This padlock had a starting bid of $195 (Plus $4.95 Shipping) but received no bids.
Here is a neat miniature antique dog collar padlock. It measures a mere 3/4 inch long, 9/16 across, and 1/8 inch thick. It is a working padlock, though takes no key. The trick to opening is slide the key post sideways and pull the shackle. It is a very rare and hard to find miniature padlock likely dating to the late 19th century. The last two photos showing three locks are to show you the others currently listed in seperate auctions. This auction is only for the tiny 3/4 inch horseshoe trick lock. I will consider fair and reasonable offers. - eBay (26 March 2011)