This looks like it was a homemade, one-of-a-kind thing done by a solder, but I'm not sure. Have a look.

http://cgi.ebay.com/aw-cgi/eBayISAPI.dll?ViewItem&item=1629712048

Someone set me straight on the above item and the EBAY description now more accurately states what it is. Phew, a day almost went by without me learning something new. Thanks to the MWRine who kindly shared their knowledge.