English: Guatemala third issue, April 1875 liberty head, 1 real blue, cancelled with 'B31' British postmark. Engraved.

Printed by the Columbian Bank Note Company, New York.

• 1872 Postal Rates:
  • 1/4 Real - Printed matter rate
  • 1/2 real - Single internal rate
  • 1 Real - Double internal rate
  • 2 Reales - Single outbound rate
  • 4 Reales - Double outbound Rate Up to 1 Ounce Weight
  • 1 Peso (8 Reales) - Double Rate from 1 Ounce up to 2 Ounces
  • 4 Reales - Addtional Weight Per Ounce or Fraction Thereof.