Forerunner of the First Regular Postal Card issue of 1882-1883.
Prepared Following the Entry of El Salvador to the Universal Postal Union in April 1879

Locally Printed on White Paper Card Stock
Size: 138 mm x 91 mm


Lilac Blue on white, issued without face value.

UNLISTED ONLY KNOWN


1879 JULY 15: SAN SALVADOR to SWITZERLAND
Yellow Brown on white card  with 1c and 2c Volcano issues for
proper 3c Outbound Postal Card Rate. Via London, August 13.

ONLY USED OF TWO KNOWN