Richter’s Anchor Blocks, Set No. 4 ½

F. Ad. Richter & Company of Rudolstadt, Germany, manufactured the first set of Anchor Stone Blocks in 1880. These popular, durable cast-stone blocks were made from a mixture of quartz sand, chalk, and linseed oil, and have long been valued for their craftsmanship, their natural feel, and their weight, compared to blocks made out of wood or cardboard.