ONE  CENTAVO
Eight printings in panes of 25 stamps. On unwatermarked paper. Issued perforation 12.

FIRST PRINTING

In dark green and shades, on thick paper.
Produced by first three strips of 5 resulting in 15 different engravings
and repeating the first two strips in reverse order to complete the pane.


FIRST PRINTING CHARACTERISTICS
a
Row A: 1) Upper ornament terminates over "T" of "POSTAL". Upper numeral "1" long.
2) Upper left ornament ends over "S" of "POSTAL". Lower "C" on right of circle and in low position. 
3) Lower left side ornament below letter "U" of "REPUBLICA" is small and touches the circle. 
4) The "N" and "P" of "UNION" and "POSTAL" very close.
5) Inverted "V" for "A" in "SALVADOR". Shading lines around the volcano thin.
Row B: 6) Wide spacing between "L" and "S" of "DEL" and "SALVADOR".
7) Upper and lower "C" heavy and thin respectively and both on left of circle. 
8) Lower "1" with a fine horizontal line on its barb. Left "1" is tall, low and well centered in the circle.
9) Upper right side ornament terminates of "A" of "UNIVERSAL".
10) Upper right side ornament terminates of "S" of "UNIVERSAL".
Row C: 11)  Lower "C" thin and very close to the right of the circle. Upper "C" thick and close to the right.
12) Upper "C" thick, low and well centered. Top right ornament without hook and  touching the circle.
13) Lower "C" thin and  well centered. Last "N" of "UNION" very thick. 
14) White line on "O" of "UNION" and its "N" and "P" of "POSTAL" very close. 
15) Inverted "V" for "A" in "SALVADOR". Shading lines around the volcano thick.
1881 SAN SALVADOR to BERLIN, GERMANY
1c (Type 4) with 2c issue on newspaper wrapper for 
3c printed matter rate to Europe.
1884 LA LIBERTAD to NOVA SCOTIA, CANADA
1c x 2 (Types 11 and 14) on card enveloped mailed unsealed for 2c printed matter rate to North America.