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1862 NOVEMBER 1: MONTERREY to EL CARRO 1/2 Real black on pink for Printed Matter Rate. |
1861 SEPTEMBER 12: MEXICO to GUANAJUATO 1 Real black on green x 2 and 4 Reales red on yellow for 6 Reales rate per 1/4 ounce letter rate sent over 17 leagues. |
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