1940 JUNE
5: MANILA to MALOLOS, BULACAN 27.0 x 18.0
cm Large envelope with pair of 1935 8c Pearl Fishing O.B. (#O18)
for 16c First
Class Domestic Rate, 160 grams maximum weight.
SCARCE USE
OF 8c O.B. ISSUE
1941 MAY
4: MANILA to MALOLOS, BULACAN 27.0 x 18.0
cm Large envelope with block of 4 of 1938 10c Fort Santiago O.B.
(#OB31)
for 40c First
Class Domestic Rate, 400 grams maximum weight.