This Manchester julep cup is 3 5/8" tall with a diameter at top of 2 3/4" and at bottom of 2 3/8".  It weighs 124 grams.

This style of julep has one of the classic traditional forms with a slightly rolled lip and then three bands at the top and bottom rim.  

The cup has a handsome block CKN triple monogram on one side.

This cup is marked for Manchester, sterling and 3759 on the bottom.