VTG Set of 3 Cobalt Blue Pressed Glass Ashtrays Stackable

This set of 3 vintage ashtrays are free of cracks or chips. Clean and in great condition for their age. No odors!!! Set includes 2 small ashtrays that each measure 4.5"x 4.5" Larger is 6" x 6" I believe these may be made by Anchor Hocking, but I do not see any markings. These are well made and on the heavier side