"Thanks but the question was fairly specific, not about what Bavarian cuirassiers looked like."
Sorry my fault.
An easy way to solve this and like questions, is to look at German 30 mm flat figures, many of the producers have made illustrated catalogues with drawings of their series.
I think to remember, the company Neckel had a series of Bavarian cuirrassiers, most possibly with a trumpeter.
The German flat figures are mostly very historical correct.
I am sure some on this forum has the old catalogue, at the moment, I can not find mine.