Vintage MID CENTURY MODERN Blue Glass Round Ashtray 3 Slot

This single ashtray is in good condition. It's free from chips and cracks. It's unmarked, so I'm unsure of the brand. It's 3 5/16" across and 1.5" tall. Each slot is 0.25" across and 0.25" deep. See all pictures. Shipping is usps ground for 9.99.