Only one plate used with several retouches and re-engravings made during printing. Colour of the first printings was deep blue. The colour then varied considerably from dull slate to very deep ultramarine.

 Ultramarine
Position 20

 Blue
Positions 19 and 24

 Bright Blue
Position 28
 
CIRCULAR DOTTED CANCELLATION
SMALL BAEZA
CIRCULAR DATE
STAMP

Gray Blue
Position 3

Gray
Positions 12, 13, 14, 17, 18 and 19
LARGE BAEZA
CIRCULAR DATE
STAMP

Gray Blue
Position 8