Korea Stamp Lot airmail #C6-C8, 1957 series #252-259

Here are two South Korea Stamp packets sold by the H.E. Harris and Co. Inc. of Boston. One pack is the C6-C8 airmails (pre-cancel with gum, one torn during separation). The other packet has seven used stamps from a 1957 series in the range #252 to 259 (missing #257).