ca 1930s: DAVAO CITY to SANTA CRUZ, DAVAO Provincial Treasurer official mail, the 10c O.B. franking for proper quintuple First Class Domestic Rate, 100 grams maximum weight.

1935 NOVEMBER 18: DAVAO CITY to SANTA CRUZ, DAVAO Court of First Instance official mail, the 20c O.B. for proper Double First Class Registered Domestic Rate (4c postage + 16c Registry Fee), 40 grams maximum weight. Backstamped STA CRUZ, November 19.