Harold, I had one but my good friend fell in love with it and whisked it away.
Anyway, mine was 65mm 16 gauge. This is the best site to look at that I have found for data on these.
http://www.skydevaaben.com/index.xml
I visited Stockholm (for work) quite a few times in that last two years and saw quite a few of these in different variations in some of the local shops. Those that I have handles are of good quality and I hear some had Sauer receiver components.