This set of 3 Dunbar Aramis Iridescent Lustre Blue Gold Ringed 12oz Tumblers from the 1930s exudes vintage charm with its Art Deco style and elegant glass finish. Made in the United States, these round tumblers feature a striking blue and gold color scheme, perfect for all occasions. The decorative Aramis pattern and rolled ribbed/ring design add a touch of sophistication to your drinkware collection. Hand wash only to preserve their original beauty, these tumblers are a unique and eye-catching addition to any home bar or glassware collection.

Based on the information provided, you're describing an antique glassware item known as a Dunbar Aramis tumbler,featuring a distinctive six-ringed design, iridescent luster finish, and typically found in blue or tan/orange hues. This piece is considered Art Deco barware. 

* Dunbar Glass Company History: The Dunbar Glass Company operated from 1913 to 1953, initially making lamp chimneys before expanding into glassware during the Depression era.

* Aramis Pattern: This pattern is characterized by its horizontal stacked ring design, sometimes referred to as "Roll" or "Michelin Man".

* Art Deco Characteristics: Art Deco glass is known for its smooth lines, geometric shapes, and vibrant colors. The Aramis tumbler embodies these characteristics