My USA Stamps
1941
Scott 903
VERMONT STATEHOOD
Issued 4th Mar 1941 on unwatermarked paper, printed rotary press and perf 11:10½.
Scott C25 to C31
AIRMAIL
Issued 1941 to 1945. Rotary Press printed on unwatermarked paper and perf 11:10½.
The US domestic airmail rate was 6c per Oz from 1st July 1934 until 25th Mar 1944. The domestic rate increased to 8c per Oz on 26th Mar 1944 until 30th Sep 1946.