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This listing features a pair of vintage commercial cover envelopes sent from San Juan, Puerto Rico in the 1930s. Both covers franked with 1c green Benjamin Franklin stamps canceled with clear machine postmarks from San Juan, Puerto Rico.
One cover features printed commercial corner card branding for Casa Elmendorf (Todo Para Oficinas y Escuelas, Tetuan 9) sent with a window envelope format. The second cover displays printed corner card logo for The Shell Co. (Porto Rico) Ltd. (P.O. Box 551) addressed to the Porto Rico Railway Light & Power Co. in Santurce, dated August 5, 1936.
Both covers show typical postal history age toning, edge wear, and historical reverse pencil notation from prior collection organization.
