The vintage Corelle coffee mug features a Spring Blossom (Crazy Daisy) pattern in green milk glass, produced in the 1970s in the United States. This retro-style mug is part of the Wildflower product line by Corelle, known for its floral theme and fused glass production technique. The mug is a collector's item, with a classic design that appeals to unisex adults and showcases the charming vintage aesthetic of the era.