Technical description: silver-plated brass with silver rim; flat rim contour; maximum bite curvature 1.0; intermediate cup shape; maximum throat curvature c|6. Repair History: Originally with screw adjustment similar to (1888), but this appears to have been disabled and the rim soldered in place, with a pin adjacent to the original grub-screw.
length 62.3; external diameter 27.1.
ex- Don Lock collection.; on loan to the Collection.