Pyrex Corning Cup Mug Old Town Blue Onion 8 oz Tea Coffee Milk Glass Set Of 2 The Pyrex Corning Cup Mug Old Town Blue Onion 8 oz Tea Coffee Milk Glass Set Of 2 is a vintage set of round mugs made of milk glass with a blue and white Old Town Blue Onion pattern. Manufactured in 1972 by PYREX, these mugs are part of the Corning product line and feature an American theme. With a nostalgic charm and production style of milk glass, these mugs are perfect for all occasions and make for a charming addition to any kitchen or dining table. Ideal for tea, coffee, or milk, this set of 2 mugs is a collector's item that captures the essence of 1970s American glassware design.