10 CENTAVOS BLUE and BLUE GRAY
10 CENTAVOS BLUE BISECT 
TO PRODUCE 5c SINGLE INTERNAL RATE


10c Blue vertical bisect on piece
with "9" (QUEZALTENANGO)
oval of dots cancel

ca 1872: QUEZALTENANGO to GUATEMALA
10c Blue vertical bisect to produce 5c single internal rate.

ONLY KNOWN EXAMPLE ON ENTIRE COVER


1872, APRIL 7: GUATEMALA to SAN SALVADOR
10c Blue with "1" oval of dots cancel.

1872, APRIL 2: GUATEMALA to STA ANA, SAN SALVADOR 
With 10c blue, oval CORREOS GUATEMALA on the side.