This is the drum.
http://i.imgur.com/h3oKJ4W.jpg
No heads for it, and one of the rims is broken in half. The carrying rope is on the side.
As far as I know, his family is polish (my mom was adopted so I don't share his genetic line). He knows they share the same last name at least as far back as his grandfather, which is Krakow, but doesn't know if it was ever changed or different before that.
Is it likely that this is a legitimate artifact from the war?
Try /r/Genealogy, they may be able to help with those lines