I have seen a lot of variation in dome sizes on these early Hemingray's, but these are extreme! The one on the left, is 2 1/16 and the one on the right, 2 1/2 (measured to the nearest 1/16). The left one is older embossing but lettered very neatly. The one on the right is the "stamped" style embossing. If you have a larger dome than this, please email me!