Set of 3 antique vintage Czechoslovakian atomic models

Set of 3 antique vintage Czechoslovakian atomic models. Czechoslovakian, circa 1950s. Made of wooden balls and stainless steel rods. Size: larger: 5.5 x 4.5 x 3.5 inches- cuboid; medium: 4.5 x 4.5 x 4.5 inches - square; smaller: 3.5 x 3.5 x 3 inches. Combined weight: 197g (allow up to 2 kg volumetric weight once packed). Good vintage condition.