johann haberda was buchsenmacher (gunmaker) for the duke of Schwarzenberg.....this boar ? rifle is about a 47 cal....am trying to find out where numbers might be located to verify or try to find who it was built for...I first thought it was for the fieldmarshall Schwarzenberg but have since discovered some of if not all guns have engravings on top of barrell ( furst schwarzenberg ????? HELP thanks KD