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In black or violet, oval frame measuring 20.0 x 8.0 mm. Used only in the provinces of Pangasinan and Pampanga.
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4c Lincoln RARE MINT EXAMPLE |
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1c Franklin Strip of 3 Partial SAN FERNANDO (PAMPANGA) Cancel |
2c Washington Partial PANGASINAN Cancel |
10 FEBRUARY 1907: DAGUPAN, PANGASINAN to MANILA 1/2 ounce single rated Constabulary official mail with 1c Franklin with violet oval framed “O.B.” tied with DAGUPAN & MANILA / SOUTH / R.P.O. / duplex. Same day arrival on verso. THE ONLY RECORDED OVAL FRAMED "O.B." COVER |
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