5c Light Blue, De La Rue (6).
Vertical pair, ample to large margins except touched at bottom, tied by "Eagle Pass Tex. Sep. 7" cds on bluish green folded letter datelined Monterey (Mexico)
and addressed to San Antonio Tex., blue double oval Bache-Shonfeld Co. return card hs, entered Mexican mails with framed "Monterrey/Septembre 6" datestamp, "Franco" and "2" hs rate on back, delivered to Confederate mail agent per ms. "S.Y. Groos y Ca., P[uerta] Negras," who carried it across Rio Grande and applied Confederate postage for mailing at Eagle Pass, slight splitting along folds, still Very Fine, a rare cross-border usage into Confederate Texas, ex Brooks, Frazier
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