Hohner advertising brand "Female Accordion player on the lake", made by the company "Jos. C. Huber, Diessen in front of Munich".
The idyllic motif radiates something almost emancipatory. The smart accordionist with her wild curls does not look like a typical housewife of that time.
Otherwise, the advertising brand belongs to the series manufactured 1905/10 for Hohner.
Further information (in German) about the advertising stamps can be found on the page Marketing en miniature.