#CZCO21941 10c Canal Zone Airmail - Gaillard Cut, "PANAMA CANAL" overprint, type I, orange
$3.00- $16.50 #CZCO31941 15c Canal Zone Airmail - Gaillard Cut, "PANAMA CANAL" overprint, type I, blue
$2.85- $20.00 #CZCO41941 20c Canal Zone Airmail - Gaillard Cut, "PANAMA CANAL" overprint, type I, red violet
$6.00- $26.50 #CZCO51942 30c Canal Zone Airmail - Gaillard Cut, "PANAMA CANAL" overprint, type I, rose lake
$7.00- $40.00 #CZCO61941 40c Canal Zone Airmail - Gaillard Cut, "PANAMA CANAL" overprint, type I, yellow
$10.50- $40.00 #CZCO71941 $1 Canal Zone Airmail - Gaillard Cut, "PANAMA CANAL" overprint, type I, black
$15.00- $35.00 #CZO21941 3c Canal Zone Official - type 1, deep violet
$1.75- $8.50 #CZCO141947 6c Canal Zone Airmail - Gaillard Cut, "PANAMA CANAL" overprint, type I, yellow brown
$7.00- $20.00 #CZO41941 10c Canal Zone Official - type 1, orange
$2.95- $14.00