Issued in 1963, these beautiful Indonesian charity stamps feature two native orchid species: Vanda tricolor and Paphiopedilum praestans. The 1 + 0.50 rupiah stamp displays the striking speckled Vanda tricolor against a deep blue background, while the 6 + 1.50 rupiah stamp highlights the elegant slipper orchid Paphiopedilum praestans on a rich crimson field. Both carry a surtax in support of national welfare, showcasing Indonesia’s botanical heritage and the country’s commitment to conservation. A favorite among thematic collectors of orchids and tropical flora.