Sweden. Facit 31c brev, 6 öre dull lilac on early postcard sent from STOCKHOLM 3.TUR 3.5.1879 to Denmark. Arrival pmk's K. OMB.6 5.5.79 and KBHVN. ØSTERBRO 5.5. Allegedly the EARLIEST RECORDED privately manufactured pc usage to any foreign destination. Such usages were prohibited to abroad until 1.4.1886.