Set of 4 Blue Glass Drinking Goblets

Set of 4 Blue Glass Drinking Goblets. Unsure of the maker. Thick and heavy glass. No visible cracks or chips. The bottom center seems to have flaws on all four… one in particular has a grove on the bottom that can be felt with your fingernail, might be caused during production I’m assuming. See photos for details. Comes from a smoke free and pet friendly home.