Philippine Constabulary 2c Rzial Green on Buff
Official Envelopes

UPSS-OB19: SIZE 7
Form 2 Corner Card, Without Comma After "OFFICIAL"
1911 DECEMBER 10: ILOILO to MANILA

UPSS-___: NOT LISTED ????
Similar in size to UPSS-OB19 (Size 7) but with Form 2a Corner Card, Comma After "OFFICIAL"
1913 NOVEMBER 20: ZAMBOANGA CIRCULATING
7.30.2006