#PHC181928 2c Philippine Islands Airmail, green, unwatermarked, perf 11
$2.10 #PHC381933 6c Philippine Islands Airmail, deep violet,on US Regular Issues
$2.10 #PHC371933 4c Philippine Islands Airmail, carmine
$1.25- $1.95 #PHC511933 32c Philippine Islands Airmail, olive brown,unwatermarked, perf 11
$1.75- $2.50 #PHC361933 2c Philippine Islands Airmail, green,on US Regular Issues
$1.00- $1.50 #PHC501933 24c Philippine Islands Airmail, deep violet,unwatermarked, perf 11
$1.00- $1.40 #PHC481933 12c Philippine Islands Airmail, orange, unwatermarked, perf 11
$1.40- $2.00 #PHC491933 20c Philippine Islands Airmail, yellow, unwatermarked, perf 11
$1.00- $1.40