Local letter from Christiansted 22 December 1906 to St. Thomas. 5 BIT King Christian IX cancelled with cds ‘CHRISTIANSTED 22/12 1906’ LAP3. Domestic letter rate 10 BIT from 15.6.1905 – 31.3.1917, 5 BIT insufficiently franked, due double 5 BIT = 10 BIT charged and stamped circle ‘T’ on front. On reverse a pair of 5 BIT EFTERPORTO tied by cds ‘ST. THOMAS 23/12 1906’ LAP type. This being the only recorded King Christian IX LOCAL LETTER WITH EFTERPORTO stamps affixed in payment for missing postage and cancelled. Only three other stamp franked local postage due letters recorded. The relative large numbers of consignees letters that are known with due stamps has not been taken into consideration. A great postal history rarity.