This is a rare 19th century Cotterill Patent Climax Detector padlock, complete with original key. The padlock is marked ’unpickable and powder-proof’, as well as with all the name details. Measures 13.4cm top to bottom when closed, and is in good working order. There are a few age related knocks, to be expected, but generally excellent. The lock is not stiff, the original key is still present, and it would be a perfectly usable padlock. I don’t know if there was originally a keyhole cover, but if so it is no longer present. - eBay (27 June 2010)
This padlock had a high bid of 1,131.11 British Pounds/$1,719.63 (Plus 23Pounds Shipping).