doi:10.7916/d8-mfyb-vk47Advertising Cover for Musk, Calcutta to Pharijong [Tibet], 1934Sahu Mahadharprinted ephemeratextMuskCommerceCalcutta (India)Pagri (China)Advertising cover from Sahu Mahadhar, Fur and Musk Merchant in Calcutta, addressed in [Hindi?], with postal cancellations