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
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Provenance
| until 2012 | Anonymous |
| in 2012 | Sold by Tarisio |
| 2012 - 2022 | Anonymous |
| from 2022 | Current owner |