Helmuth Keller, Philadelphia, PA, 1964
Viola: 128368
Labeled, "Helmuth A. Keller master - luthier Philadelphia, Pa."
Inscribed to the inside back, "64."
Length of back: 42.2 cm
Upper bouts: 20.8 cm
Middle bouts: 14.4 cm
Lower bouts: 24.9 cm
Provenance
| until 2025 | Anonymous |
| in 2025 | Sold by Tarisio |
| from 2025 | Current owner |