Uniform 4d Postage. 1839 Entire letter from Jamaica to London with Alexandria backstamp, prepaid 7d Jamaican internal postage, London arrival c.d.s of Dec. 25th, charged 1/- (8d ship letter fee + 4d uniform postage, altered from 2/2), the postage paid and the letter readdressed to Lincolnshire prepaid the internal uniform 4d rate, very unusual.