(2) Vintage Diet Coke Glasses

Set of Two (2) Vintage DIET COKE Promo Drinking Glasses/Tumblers - White swirl design w/ Coca Cola 'DIET COKE' logo; Late 80s / Early 90s Excellent vintage condition - no chips, nicks, cracks or scratches - colors are not faded, crisp and vivid - there is a small marking on one of the glasses; looks like it might be faded marker? (see last photo)