TriLock maximum security Handcuffs

These very rare maximum security handcuffs sold for $400 after 4 bids. They come with one original key and one which the seller states may be original also and works. 

Below, note the central keyhole and the large rivets. 

Below, note the cable linkage and the thickness of the high strength resin material. This was made by DuPont. The internals are obviously steel. 

Below, note the dual sets of pawls, both of which double lock. The blue edging is a removable silicone type liner. 

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