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SAN SALVADOR to SAN FRANCISCO 10c Red on light yellow wove paper port rate envelope, received January 13, 1893. |
SEPTEMBER 13: LA LIBERTAD to SAN SALVADOR 10c Red on white port rate used as double interior rate envelope. a |
MAY 26: SAN SALVADOR to LONDON 10c Red on white envelope uprated to 11c single outbound rate. a a |
FEBRUARY 25: SAN SALVADOR to SAN FRANCISCO 10c Envelope uprated with "1890" year error on sender's cachet. Charged 20 cents upon arrival for 10c shortpaid double port rate and 10c as penalty. |
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