1931 Rizal Imperf - Paquebot Cover

1931 NOVEMBER 13: STA CRUZ, DAVAO to CALIFORNIA
Franked with margin pair of 2c Rizal imperforate issue (340) for proper 4c single outbound
rate to the U.S., mailed on board per blue-violet PAQUEBOT strike, type used
on Manila bound vessels from 1929 to 1938.