Vintage bayonet quick connect ball hook swivel - eBay

[paranday]

These don't show up for sale very often. Swivel twists into the base for quick release, quick connect. I've got one, no brand name on it. Maybe Dutchman knows the story about these.

http://www.ebay.com/itm/264876534239

[Dutchman]

I've seen a few of these, from my observation they are fairly rare , like Paranday said, they don't surface too often. All of them had no maker's mark of any kind. I have speculated that these might have been made for pro gyms, and not sold to the general public. Bears some resemblance to Nicols, but Narragansett and Goldsmith are also in the running

[paranday]

Mine is in storage somewhere and I couldn't find it on moment's notice. They are well made and reasonably quiet as I recall. Hopefully a catalog page will reveal their maker. Someone who likes punching old school larger speedbags should snap it up. It's from that era.

[paranday]

Sold.