Technical description: german silver; screw cup, enabling depth to be increased by up to 8mm; medium rim contour; maximum bite curvature 2.0; intermediate cup shape; maximum throat curvature 10. Cup volume 3984 (screwed in), 7935 (screwed out); shape quotient 1.197 (screwed in), 1.524 (screwed out).
R. Parks, 20 May 1995; Arnold Myers, Aug 1995; Nadine Parks, Jul/Aug 1990.
length 84.2; external diameter 39.0.
Bought new by lender from maker in 1970.; on loan to the Collection.