#PHC481933 12c Philippine Islands Airmail, orange, unwatermarked, perf 11
$1.00- $2.00 #PHC491933 20c Philippine Islands Airmail, yellow, unwatermarked, perf 11
Call for Availability #PHC511933 32c Philippine Islands Airmail, olive brown,unwatermarked, perf 11
Call for Availability #PHC471933 4c Philippine Islands Airmail, rose carmine, unwatermarked, perf 11
$0.55- $1.50 #PHC461933 2c Philippine Islands Airmail, green, unwatermarked, perf 11
$1.40- $2.25 #PHC431933 20c Philippine Islands Airmail, yellow, on US Regular Issues
Call for Availability #PHC571939 8c on 26c Philippine Islands Airmail, blue green, #'s 298a, 298, 431
$2.10- $3.00 #PHC521935 10c Philippine Islands Airmail, rose carmine,unwatermarked, perf 11
$1.50 #PHC181928 2c Philippine Islands Airmail, green, unwatermarked, perf 11
$1.75 #PHC541936 2c on 4c carmine, Philippine Islands Airmail, #'s 291, 295, 298a, 298
$0.65- $1.00