Alex Cooper Auctioneers in Towson (Baltimore), Maryland have a couple nice double barrel shotguns in their latest auction. This auction starts tomorrow, 3/21 and it runs into Monday. I’m not sure when these side-by-sides are coming up.
12 gauge Pietro Beretta Silver Hawk Featherweight
This is a decent looking boxlock. It has 26″ barrels.

This is nice looking gun. It was made in 1959 and it looks like a boxlock with sideplates. Double triggers, long barrels. I can’t tell if it has a cheek piece. This one also look pretty original.

I have not seen or inspected these guns, do remember: buyer beware. If they’re in good shape, they good turn into great deals — especially the Simson. That’s a nice looking gun.
Good luck.