Rough Dimensions: 3-3/8" diameter & 2-1/2" tall
Makers Mark: unsigned
Condition: Excellent to Near mint, a couple small marks to the upper dome and minor shelf wear to the concave polished base. Please see photos and let us know if you need any additional assistance.
A unusual vintage American weight with cushion of white and micro control bubbles in blue frit a Rx and a mortar and pestle with white lines radiating out.