It would appear that Otto Reif was registered as having a gunmaker storefront from the late 1920s until the mid 1930s. During this same period I've seen info that suggest he either acquired Wilhelm Heym or was a silent money backer? And at some point was involved with Rmerwerk. Then on Oktober 10th, 1946 he is listed as a Direktor of Sauer & Sohn.

Kind Regards,

Raimey
rse