16 ga double gun by M&W Sömmerda , vorm. v.Dreyse, SN 37901
https://www.dorotheum.com/de/l/6601969/

late F.v.dreyse needle fire double gun, rotatiosnstück unusual in the left barrel( most time right side)
https://sadde.auction.fr/_fr/lot/fusil-d...67#.Xo4Vks3gqUk

double rifle F.v.Dreyse Sömmerda, 15 mm caliber, 0,71" SN 6660

https://www.auction.fr/_fr/lot/zundnadel...ezogen-15819976

same lot like SN 6618