Express Mail to New York. 1837 lot of three folded letters endorsed "Express Mail", one with blue New Orleans cds, with "225" rate marking indicating triple rate (3x75¢); another with blue Mobile, Ala. cds and "150" indicating double rate; 3rd cover with blue Mobile and "300" indicating 4x75¢ rate; Very Fine and attractive group. Estimate  $300 - 400. $0 (Image)