I have what I think is a pretty unique double rifle hammer drilling. Side by side 9.3x72r rifles over 16 ga. Looks like a back action. I can email pics if anyone is interested in helping me find out more about it.

MichiganSwiss,
Send them to me and I will see what I can do. Be sure to send clear photos of all markings, especially those under the barrels.
Mike

Like to have one of those for deer hunting here in NY...

Hello MichiganSwiss
Welcome on your first posting

You have a Doppelbochs-Drilling
Double Rifle Drilling) Two side-by-side rifle barrels over one shotgun barrel

http://www.hallowellco.com/german_combination_gun_names.htm

https://www.doublegunshop.com/forums/ubbthreads.php?ubb=showflat&Number=352522&page=all

Again welcome
Mike