Small Cube Baby Block Planter A B C D Ivory Pink Blue RELPO 475C Crazing 1960's

Vintage 1960's RELPO brand? baby block cube shaped planter Ivory color with pink and blue A B C D and some tiny flowers A little over 3 1/2" square Note: there is quite a bit of crazing on the glaze - there is a silver foil sticker on the bottom, but the wording has rubbed off - marked on the the bottom with RELPO and 475C