1899 Marianas to Manila
Spanish Philippines King Alfonso XIII issues of 1898 
handstamped in violet-black with MARIANAS / ESPAÑOLAS in a fancy box.

1899 MARIANAS to MANILA
Franked with 2c, 6c and 8c overprinted issues
all tied with GOBIERNO P.M./ YSLAS MARIANAS oval postmarks.

1899 MARIANAS to MANILA
Franked with 15c overprinted issue
tied with GOBIERNO P.M./ YSLAS MARIANAS oval postmarks.

ONLY TWO COVERS KNOWN WITH 15c VALUE