BSG.BS.01553 — German, Flour Bag Seal, AR

Found in Groningen, Netherlands, 22mm, 10g.

22 / APR // MĀRK-MÜHLE ACT-GES curving downward / triangle containing A R to the sides of unknown design / WITTEN / WO

From Gerard de Weger, "German product seal of the 20th century, Inscription: MĀRK-MÜHLE ACT-GES in triangle A * R under WITTEN WO az: 22 APR in frames".

From Philippe Lanez, "22/ APR // is for April 1922

MĀRK-MÜHLE ACT-GES has to be understood as

Märkische Mühlen Actien Gesellshaft,

A.R stands for A. ROSINY ( & Comp = Cie.)

WITTEN is the name of the place :Witten an den Ruhr

W0 not WO, stands in my humble opinion for wheat grade 0

Confirmed at ths link : Inner harbor | Markish mills, Duisburg, Philosophenweg."