Vintage Retro Thermo-Serv Mugs-Set of 4-White w/ Seagram's Gin Whiskey & Bourbon

Set of 4 white vintage retro 1960s Thermo-Serv barware mugs. Very nice estate sale find. With pictures of Seagram's labels for Extra Dry Gin, Seven 7 Crown, 100 Pipers Scotch Whiskey, V. O. Canadian Whiskey, Benchmark Premium Bourbon, and Crown Royal. Holds 10 oz. each. 4 high, 3" diameter. My mother owned glasses in this brand and I remember that hand washing is best. Dishwasher can eventually be bad for the plastic.