I have been collecting these for some time and have just started to photograph them. Although only about 15% of my collection is posted you might find it of interest. There are Weimer era, SS, Youth and Trade buckles in the grouping. The Germans had a buckle for just about anyone.
I will continue to add buckles over the next several weeks.
Mark
http://www.p38guns.com/Beltbuckles.htm