1/2 REAL BROWN, LILAC or GRAY
Fourth and Fifth Periods

MEXICO

GUAYAMAS

DURANGO

S. L. POTOSI

TULANCINGO
Fourth Period

1865: ZAPOTLAN to MEXICO
Pair of 1/2 real lilac and 1 real blue for 2 reales postage
per 1/2 ounce for delivery within 16 leagues distance.

1865:  METEHUALA to SAN LUIS POTOSI
Two pieces of 1/2 real lilac and 2 reales yellow for 3 reales
postage per 1 ounce  for delivery within 16 leagues distance.

1865: MERIDA to CAMPECHE
1/2 Real lilac on wrapper.

ONLY TWO TO THREE COVERS KNOWN
a

1866, MAY 13:  MEXICO to ORSINFAING, BELGIUM
1/2 Real lilac, special military rate to Europe. 
By French mail via NAMUR and MARBEHANT.
Special 1/2 real military rate for European soldiers
who fought with Maximilian's Forces.