Vintage House of Koshu Geisha Rainbow Sake Bottle Set

This is a vintage boxed collection of seven 'House of Koshu' sake or liquor bottles, designed in a novelty mid-century style. Each glass bottle is slender and tapered, featuring a unique decorative topper shaped like a stylized Geisha head. The toppers are crafted from a cream-colored material, possibly plastic or celluloid, with hand-painted facial features and distinctive hair buns. Below the heads are metallic-finish collars in a silver-toned chrome, which serve as the bottle caps. The set is notable for its 'rainbow' theme, where each bottle contains a differently colored liquid—typically fruit-infused sake or cordials—paired with color-coded labels at the base in shades of green, purple, yellow, orange, blue, red, and dark green. Each bottle carries a white circular label with a rainbow border and the brand name 'House of Koshu.' Circa 1960s to 1970s, these sets were popular Japanese export items. The condition appears to be used-good; while the bottles are housed in their original cardboard dividers, there is visible condensation or cloudiness in some glass, and the outer packaging shows shelf wear and minor crushing. The liquid levels vary, suggesting possible evaporation or previous opening. Craftsmanship is typical of mass-produced novelty barware of the era, focusing on vibrant visual appeal and cultural kitsch.