The company Müller Robert & Sohn (operating under the ROMÜSO trademark), Stahlwarenfabrik was based in Solingen-Merscheid, Germany. While the exact founding year of the firm remains undocumented in historical records, it was a recognized entity within Solingen’s industrial network. During the Third Reich era, the company expanded its manufacturing scope to include the contract production of political edged weapons, focusing primarily on SA service daggers (Sturmabteilung), reinforcing Solingen's long-standing status as a global center for blade craftsmanship.
In 1935, the factory was officially assigned the RZM code M7/32 for the manufacturing of NSDAP political organization daggers. Müller Robert & Sohn manufactured an estimated total of approximately 4,000 SA service daggers. This production volume grants these historical pieces a 3.5/5 rarity rating (moderately rare) among military antiques collectors. These pieces are recognized for their high-quality craftsmanship, featuring solid nickel-silver fittings and the iconic etched blade motto "Alles für Deutschland".
The highly distinctive trademark of Müller Robert & Sohn consists of the text "Müller Robert & Sohn Solingen-Merscheid" etched directly onto the blade in a plain, straightforward font. This functional maker mark emphasized the manufacturer's practical orientation and makes their products easily recognizable in the collector's scene today. We are actively seeking and buying authentic pieces from this manufacturer. Surviving products from this maker represent a significant chapter of Solingen's blade industry history, making them excellent reference examples for any comprehensive blank weapons encyclopedia.
