Button with crown and the monogram "HB" before 1750.
Sizes: 30 mm (±1mm)
Theory 1: Austria - military button - the monogram stands for regiment owner: ...
Theory 2: Livery or military button from the House of Hesse - Hesse-Butzbach... Hesse-Bingenheim?
Theory 3: Livery or military button from the House of Hohenlohe - Hohenlohe-Bartenstein
Found:
Belarus: Кобрын - Kobryn
Any further information about the found location is welcome !
Further theories are welcome. The button collector community will be very grateful if you can contribute to the solution of the riddle.
Collection: Borissius
Sources / additional information:
Wikipedia - List of wars and battles in the 17th century (D)
Wikipedia - List of wars and battles in the 18th century (D)
Wikipedia - War of the Austrian Succession
Wikipedia - Silesian Wars
Wikipedia - First Silesian War
Wikipedia - Second Silesian War
Wikipedia - Seven Years' War
Wikipedia - Hesse-Darmstadt Army (D)