andreas777 wrote:Maybe it's a Meinel & Herold.
Here's a catalogue for Meinel & Herold:
Unfortunately they also 'made' violins, accordions, lute guitars, banjo's, mandolins, recorders, flutes . . . .
There you have it. It doesn't really tell you much about the people that really made it. This type of thing wasn't entirely uncommon. I have a Cittern that dates back to around the 1770's. It is stamped 'Longman, London' on the back of the instrument. In my local museum is a Longman square piano. I'm quite sure that Longman also made flutes, probably harps as well, no doubt anything else that was in demand and that they could get their hands on.