My bass has always been a bit hard to track down. Though I have looked at the one you posted up here and I almost wonder if the shoulders of mine might have been cut down. I don't think so, but was a passing thought. What I have found that is a rather similar to mine though is this Gand Jacquet.
http://www.worldofbasses.de/Instrume...1895/Gand.html
I see the similarities mostly in the scroll and top. Hopefully one day the mystery will be a bit closer to being solved, but the speculation is some of the fun with this bass