DescriptionTechnical description: (3153a) 1 coil, (3153b) 2 coils, (3153c) 3 coils.
Sounding length: Overall lengths of air column: (3153a) 679; (3153b) 1791; (3153c) estimated 2450.
Dia of mouthpiece receiver: Crook receiver tapers: (3153a) 12.5 - 11.8, (3153b) 13.1 - 11.9, (3153c) 13.0 - 12.3; external tapers (3153a) missing, (3153b) 12.0 - 12.9, (3153c) missing.
No inscriptions.
Repair History: The 679mm coupler has a missing taper end in clean joint failure, surface corrosion and a broken solder bond on bridge between turns. The 1791mm coupler has surface corrosion but no significant dents. The 2450mm coupler has a missing taper end in clean joint failure, 1 crack and surface corrosion. |