Vintage Mug Coffee Cup Blue Flowers Green Leaves Made in Japan Painted Porcelain Also Could be a Planter Flower Pot Small Bowl. Ceramic Coffee cup shaped small flower pot or planter. For drinking coffee or tea or use as a small bowl. Vintage porcelain clay mug shows some visible crazing inside and along edge - see photos. Crazing is the crackling of the glaze on vintage porcelain or pottery. Item used to have a japan sticker on botttom. 5 inches wide, 6 with handle and about 4 inches tall.