Antique Sections of a Sphere Wooden Blocks Set in Finger Jointed Slide Top Box ash glaze I have a soft spot

I have a soft spot for old folky inlaid frames like this

this is quite an old one--dating sometime between the late 19th century and the 1920s--and quite a wonderful one

what could be better than this wide-eyed

these toys were made famous in the USA by the Milton Bradley Company

7 3/4" long x 1 7/8" wide x 1 1/4" deep

Antique Sections of a Sphere Wooden Blocks Set in Finger Jointed Slide Top Box ash glaze I have a soft spotI recently found a couple of c. 1900 Milton Bradley Kindergarten Blocks sets designed by Friedrich Froebel, which the box and the blocks on this set remind me very much of. I have not been able to find another set like this one out there, which I assume were made to teach the concept of fractions, with five slots in the box corresponding to five sets of blocks, dividing a sphere into 2 then 3, 4, 5 and 6 sections. I can't say for sure that these were