Orion

Orion was one of the alternate lines of building stones made by Richter early in the 20th century. The sets used smaller stone sizes, not compatible with the more common and more popular Large Caliber sets. Most Anker builders prefer the larger stones, and for structures involving large numbers of stones, they have surely made the best choice. Anker's Small Calibers sets, whatever the label, are just a bit too fussy to build very large with. That the smaller series lacks the variety of stones of the larger series is also a contraining factor. That said, I enjoy my small stones, and would like to get more.