【Product Description】 This is a vintage mug that was offered as a novelty item by McDonald's in the 1960s and 1970s, as part of their breakfast sets. Based on the stamp (photo 4), this item was produced after 1977, making it relatively new within this series. Size: 8.8cm (height) x 7.7cm (diameter) 【Stamp】 OVEN-PROOF Anchor Mark MADE IN U.S.A. 【Condition】 There may be minor scratches, unevenness, and discoloration that occur during manufacturing, but these are not defects.