This set of cuffs had a high bid of $3,725 (Plus $20 Shipping).
HANDCUFFS MUEHLENFELD No. 113
Nice old German handcuffs made by the Muehlenfeld Comany in Barmen in the late 1800s. They were in use in police departements, and prisons, such as the infamous Zuchthäuser (prisons for dangerous criminal) from the 1870s till 1920s. Harry Houdini escaped from these on his visit to Germany. This Handcuffs come with their original key in a very good working order, strong springs, they open and close with no problems, they have a nice dark brown old patina, no rust or pitting. They are obviously an old pattern, as they are steel with no plating, later models used to have plating.
Happy Bidding and good luck! - eBay (16 April 2010)