This custom collar had a high bid of $58.89 (Plus Free Shipping).
Stainless Steel Round Key Collar - Restraint
This is a serious, rigid three hinge, 1 & 3/4 inch tall locking collar! The tightest locking hole is about 14 inches around and the threaded holes are about 1/2 inches apart, so the range is up to about 14 and 1/2 inches in circumference unless you are willing to lose the leash ring then you could use the last hole for a maximum of 14 & 3/4 inches around.
The lock is really special! A round screw lock that fits to the straight edge of the collar end. It threads in with the key into one of the threaded holes. There is no way to back the lock out if you don't have the key. Almost impossible to pick and the high strength stainless steel metal is very hard to cut, especially if there is little room between the collar and neck to fit a tool, and don't even think about cutting torches...
Created by a world class restraint artist located in Australia. Those in the know may know his work. For everyone else just know that this guy really knows his art. This design is based on an antique pattern developed in the 1800's for wrist and ankle restraints. He expanded the idea for modern materials and laser cutting machines and came up with a prototype collar.
This is a truly one of a kind item. Depending on how this auction does it might be the only one ever made. If the auction does well we will commission more of these for our web store on our web sight. If the bids are low, well we hope you value the very rare collectable you will end up with on this true, no reserve auction! - eBay (17 Aug 2009)