Early Airmail covers. 15 combination or multiple frankings covers, including C1+ C3-C5 to Germany, C4 strip of three, C4+C5 First Flight, C4 block + 565, C1 pair with 509, J62 and J64 pair, C5 with J63 & J64, C5 with E12, and three covers C5 and C6(2) with Turkey 610 blocks of 4, couple with faults including reduction. Estimate  $400 - 600. $0