Remember Pearl 31

First-day covers of stamps issued during World War II often bore patriotic cachets with the "Remember Pearl Harbor" battlecry.

Franked by two copies of the 3-cent violet "Win the War" issue (Scott #905), the cover received the July 4, 1942 Washington D.C. "First Day of Issue" cancellation.

The cachet exhorts citizens to keep U.S. servicemen flying and rolling, with the "V for Victory" emblem, a determined Uncle Sam with his cuffs rolled up and ready to right, and the U.S. Capitol.