letter scale

This letter scale is packed in a hinged cardboard box. The cover has an imprint. Präzisions-Taschenbriefwaage (Translated: precision pocket letter scale) stands below a circle logo with the three characters A, M, and H. I don't know the proper sequence. AMH, AHM, or HAM, no idea. The capacity is 50 grams, per gram a stripe of measure is given. Below some more pictures of this letter scale.