Set of 3 vintage 1960’s Flower Power stackable orange mugs

Set of 3 vintage groovy 1960’s Flower Power stackable orange mugs. Mugs are 3 3/8” tall x 2 3/4” wide at the rim. Mugs are in great vintage condition no chips or cracks noted. There is a flaw under the glaze, see picture, not a crack. Marked on bottom: S I Japan. Colors are bright! No dish washer damage noted. Super cute set!! Thanks for looking! 😊 The bundle weight of this item is 1 3/4 Pounds. If you would like to make a bundle, please do not exceed 4 pounds per bundle so I can safely package & ship your items. Thanks for looking! M33-Bkk