For Sale - FBI Vintage Super Security Handcuffs Hidden Keyway made by Harrington & Richardson Arms.
These are the 2nd model which as an added security measure were manufactured with a milled groove on the side of the handcuff's bows. This was designed to prevent "spreading" the cuffs apart.

These handcuffs patented in 1934 and used exclusively for the FBI are the strongest handcuffs ever manufactured and when in place on the wrist are designed so that the keyway is hidden from sight and the entrance blocked.

The cuffs are in excellent working condition and come with the original key.
They retain approx 99% original nickel plating
The cuffs have to be seen to believe the overall excellent plus condition!

Please see pics for more info.