Missenharter Brass Instrument Factory
# 512 Bugle, made after 1867 and before 1869.
He was still in Germany, won an award in 1867 in Paris and moved to the US in 1869 so this had to have been made in Germany in 1867-68ish. Also note that it was marked C. Missenharter & Comp and numbered 512.
was found in Germany and sold to Ken Rogers 2020.