Rheinmetall Drilling SN 44167, 16 ga + 8x57IR
https://www.gunbroker.com/item/1090743737

Rheinmetall Drilling, 16 ga + 7x46,5R
https://lsbauctions.com/rheinmetall-drilling-16-ga-7mm-shotgun-rifle-combination-gun-mfd-1957-cr/
The top of the rib is marked “RHEIN. MET. u. MASCH. FBR. ABT. SOMMERDA GEWEHRFABRIK”. The rear of each shotgun barrel is marked “EHRHARDT / LAUF / SPEZIAL STAHL” around a diamond inside a circle. The bottom of each shotgun barrel is marked “29 Sch. PNA / 27g BI” outside the receiver. Under the forend, each shotgun barrel has circled “R” crowned “S” and “W” proofs, eagle proofs, “16” in circles, and “16/”. The bottom of the rifle barrel is marked “4477” in front of the forend lug, eagle proofs, crowned “U”, “F” and “G” proofs, “1 g / Tr.B.P / 9 gBI.” and “Cal. 7 / 46 1/2”. The left of the barrel lug, the inside of the forend iron and the left shoulder of the receiver are each marked “39573”. The left shoulder of the receiver is also marked “S. 657.”, the right has eagle and crowned “U” proof marks. The receiver has scroll and border engraving with motif continuing on the guard and forend iron assembly.

F.v. Dreyse double gun 0,70", SN xx744
https://www.onlinehuntingauctions.com/Dreyse-Needle-Fire-Double-Shotgun_i54808633