Measured & compared
Full-front body outlineValidated for repeat identification of the three test instruments (3.348× separation).
Coarse corner geometryProvisional evidence only (1.127× separation).
Fine corner and F-hole evidenceNot included in an identity conclusion: fine-corner repeatability failed and the F-hole channel remains under validation.
Back, arching and scrollRecorded as construction evidence; comparison channels are still in research.
Not established
Maker, origin, date, authenticity and valueThe current evidence must not be used to make these claims. Expert-confirmed reference data and independent validation are still required.