franking privilege

Via the always engaging Present /&/ Correct (check out their sundries and notions), we learn that the postal authority in the Kingdom of Bhutan in 1973 issued commemorative stamps that were tiny vinyl records that could be played on a full-sized turn-table with a stylus, most featuring traditional folk music and acoustic samples of the country. More at the links above including a rendition of the Bhutanese national anthem replayed from phonographic postage.