The Pacco Puzzle

"Made in Japan K.K.", circa 1920's?
(20 wood pieces, 4 inches;
box cover similar to other vintage Japanese exports like the Yamato Puzzle)

Two pairs of identical 4" pieces, four identical 2.5" pieces, eight identical 1.3" pieces, and four identical 1.3 inch solid pieces assemble to a somewhat two-dimensional snowfake arrangement; here is a photo of the box and the solution sheet: