Brian, I am the one who is lucky to be here to learn from all the experts. Joining the forum is really better than reading up the reference books. There are so many haubes that appear in this forum which are not found in the books.
I have done a comparison chart for Wurttemberg Officers. I tried copy and base from Excel worksheet but it doesn't work, so I have to take pic of it and then post it here.
IR 119 / IR 123
Didier’s Book showed BRASS BOSSES
Stubbs Page 209 showed brass stars, flat brass CS and silver bosses
Larcade Vol 1 Page 105 showed brass stars, flat brass CS and silver bosses.
PB 13
Didier’s Book showed Bavarian “crisp” spike
Stubbs Page 423 showed brass stars, flat brass CS and silver bosses.