Lot no. 428

1919, Manila Exhibition Flight by Ruth Law, souvenir card with inscription "AERIAL POST CARD to commemorate the First Aerial Mail Service in the Philippines", 4 c. stamp tied by triangular violet cachet "AERIAL MAIL SRVICE BUREAU OF POSTS PHILIPPINE ISLANDS. MISS RUTH LAW", card number 988A, rare flown card, one horizontal crease (affecting adhesive), otherwise fine