Bright, crisp white porcelain insulator. Dark green ink-stamped under-glaze "A.E.R." marking on dome. Probably impossible to improve on the condition. I am hesitant to call anything mint, but I don't see anything wrong here. $75.00 + $10.00 shipping to U.S.A. locations. PayPal No Fee mode preferred, but will accept other forms of payment. Thanks!