SHMS I got today. Its size 2, it was issued in DDR. The second photo shows it with M56 helmet. The mask is in pristine condition, although missing The bag sadly :
Military gas mask hi-res stock photography and images - Alamy
DRK-DDR.de
Gasmaske MLW ASM ABC Schutzmaske DDR NVA BW Feuerwehr Antik Gr. 2 in Berlin - Pankow | eBay Kleinanzeigen
Gasmaske DDR, € 20,- (6130 Schwaz) - willhaben
German Gas Mask Post War 1961 with Canister Complete with Straps | eBay
SchMS gas mask (1980-91 DDR version) overall view by DrJorus on DeviantArt
NVA ABC Schutzmaske Gasmaske M41 | armyoutlet.de
Military gas mask on display at DDR Museum, showing life in former East Germany, in Mitte Berlin, Germany Stock Photo - Alamy
Genuine Soviet Era Gas Mask Respiratory Chemical OD Grey NATO - Etsy
WW2 German, Soviet, Allied militaria, uniforms, awards, weapons history. War relics forum
DDR Atemschutz Gesichtsmaske 13114 - 13314 made by MLW : r/gasmasks