Rough Dimensions: 2-7/8" diameter & 2-3/4" tall

Makers Mark: Hand inscribed to the flat polished base, "Simpson 11-42-9". 

Condition:  Excellent with a couple minor rub marks in one spot to the side of the dome. Please see photos and let us know if you need any additional assistance. 

This is an excellent example with mottled blue and green planet surface, several complex cane structures, a filigree arch, micro control bubbles and dichroic, and multicolored ribbon twist space ship.