Line #299 was unnamed; toddy refers to the type of tumbler. Made in crystal, moongleam, flamingo and sahara. It is 3-1/4" high and holds 6 1/2 oz. Made in plain or narrow optic (shown), with an eight panel lower section. Clear "Diamond H" trademark on bottom.
Note - the rim looks ribbed in the photo, but that is only because it is the far side of the tumbler seen through the narrow optic.
