Helmuth Keller, Philadelphia, PA, c. 1973
Viola: 33614
Labeled, "Helmuth Q. Keller, Violinmaker, Philadelphia, PA."
Branded to the lower rib, "HK."
Length of back: 42.5 cm
Provenance
| until 2012 | Anonymous |
| in 2012 | Sold by Tarisio |
| from 2012 | Current owner |