L) 1967 MEXICO, MILITARY MEDICAL SCHOOL, CROSS, AIR MAIL, CIRCULATED COVER FROM

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L) 1967 MEXICO, MILITARY MEDICAL SCHOOL, CROSS, AIR MAIL, CIRCULATED COVER FROM:
$9.99

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L) 1967 MEXICO, MILITARY MEDICAL SCHOOL, CROSS, AIR MAIL, CIRCULATED CVER FROM MEXICO TO USA, XF

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L) 1967 MEXICO, MILITARY MEDICAL SCHOOL, CROSS, AIR MAIL, CIRCULATED COVER FROM:
$9.99