The letter M under the head of Karl I. is the initial for the die-cutter Mahrenholz
EK under the horse is the mintmaster. Engelhard Johann Krull.
minted in brunswick (braunschweig)the coin was also called pistole.
you will not find that coins often on
ebay or worthpoint.
they mostly are in professional auctions and good auction houses.
i wouldn´t by such a coin on
ebay.
at the www, you will find more if you use the german translation braunschweig.
http://www.coinarchives.com/w/lotvi...b68c6a286375