"The Musical Box: A Guide For Collectors," by Arthur W.J.G. Ord-Hume,
has this to say about Stauffer on p. 302:

  "Stauffer: Geneva, Switzerland.  Maker of or agent for good-quality
  musical boxes.  Name usually found stamped on flat of winding-lever.
  Appears to have been in business around 1878."

Short and sweet.

Matthew Caulfield,
Irondequoit, New York