This is another interesting variation of the coin padlock. Seems to be a nice steady stream of these kinds of padlocks coming around.
This is for a nice little hand made padlock and key. The lock is made from two silver coins and comes complete with a key that operates it. The front shows George VII and the reverse is a farthing dated 1916. It is in excellent condition, fully working and it measures 20mm (0.75") in diameter. - eBay (17 Nov 2013)
This padlock had a high bid of 38.67 British Pounds/$62.22 (Plus 3.90 Pounds Shipping).-----