This is a very cool looking pair of handcuffs. I was thinking of bidding on it, until the bidding got into the hundreds:
For auction are vintage hand cuffs marked Walden Tool Co. Boston Mass. I know nothing about handcuffs, but I would consider them to be in good working condition - with key. They measure approx. 9" long. - eBay
With that short description and one photo, these handcuffs finally went for $1,306.87 (Plus $4.50 in shipping) So someone thinks these are very rare. I have never seen this type up for bid before so they are probably right, or have lots of money.