Bill:
I had been eyeballing a similar one on ebay this past week but decided to not make a move on it due to various issues requiring repair:
http://www.ebay.com/itm/GERMAN-LUGER...item35b8c476fe
I found a photo of a similar one with description suggesting it was a Swiss or Swiss Conversion. See the round hold down attachment stitching indicative of Swiss holsters. I just went back through both of Bender's books I have and cannot relocate the reference. I will post it if I find out where I saw it.
Regards -
Clark