Hello, new to the forum. I might have the opportunity to acquire an R. Mahrholdt - Peterlong over under shotgun. It is in 20 Ga with an extra set of 28 ga barrels. I tried to find some info onthe web, but came up mostly empty. I did find a lot of info on rifle and combination guns, but no over/unders. So, I came to the experts. Any information on what to look for and approximate value would be much appreciated. I will try to get some pictures.

Thanks,

krf