I finally finished one of the toy soldiers that have been sitting on my bench for a long time. Here is an ensign, or Fahnenjunker, of the Prince of Württemberg's regiment of dragoons (Nr. 12), another casting by Stadden, and found on eBay:
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Casting is of the usual quality for Stadden's mass-produced custom figures, but the flag was not quite accurate for a Prussian dragoon standard. The flag is a generic flag Stadden used for figures not made to order, a square piece of tin soldered to the staff, with an Imperial German cravat attached. I cut a swallow-tail into the trailing edge of the standard, which is the pattern for the Prussian dragoons. But I decided to leave the cravat; removing it would have been too messy.
Thanks again for looking!