Welcome to the forum and GREAT Diorama!
Where do Fishhead and I get those castings!!!!?????
FUB
Hi, Fub, you can try here:
http://www.zinnfigur.com/
That is the gateway page for Hans-Günther Scholtz's Berliner Zinnfiguren; don't worry, there is a choice for English on that page. Then choose "Round Figures", and once you transition to that page, choose Miniwelt in the scrolling menu. The Napoleonics are listed in the 60mm catalog, though they and the Seven Years War Prussians are really of the same scale.
Scholtz was at one time the only vendor selling MiniWelt, but there may be others by now. Also, the gentleman who produces the line used to sell them on eBay as well, but I haven't seen his auctions there, in a while.
Scholtz sells the figures as kits, but also offers a painting service.
I can recommend the figures, they are exceptionally well-sculpted and paint up beautifully (as we see here in VID's diorama).
The only caution is with the mounted figures. I have a Prussian ADC, and the weight of the figure and the horse's body caused the legs to bend a little. If I were to start with a new kit, I would rout out grooves in the legs, reinforce them with brass rod, and putty them over.
Prosit!
Brad