Mixed franking CENTS/BIT 1 Cent Coat of Arms postcard and 5 BIT King Christian IX supplementary franking sent from St. Thomas to Montserrat 7. October 1905, a scarce destination. 1 Cent counted for 5 BIT, total postage 10 BIT for UPU countries. Mixed frankings CENT/BIT issues are rarities. Francs/BIT were introduced 15th July 1905.