Hello James-
I am an old fan and family friend of the Marxes, particularly Harpo.
The only harp that remains in the possession of the family is a small practice harp (don't know the make), which is proudly displayed on a pedestal in his son Bill's house.
I own an original painting created by Harpo in 1961, which was given to me by his wife Susan in 1975. I plan to photograph it soon and share on this site.
Best,
Pat
To Dickie: I checked with Steve Fritzmann, at your suggestion. Following is his reply . . .
Thank you for your kind email. Although Mr. Harpo Marx preferred the Lyon & Healy harp we are sad to say that we do not own any harp of his. Sorry we could not be of more help.
Sincerely,
Stephen Fritzmann
National Sales Manager