The 1 Peso on 1.25 Pesos pale blue provisional.
This provisional was first reported in the philatelic press in July 1924. It was stated that 100,000 were printed but 18,000 of these were burned due to poor overprints. Thus the delivered total was 84,000. I have recorded no essay, proofs, or varieties of this issue.
The Map Stamps
These were printed by the Government Printing Works. The 1 Peso is known in dark blue and blue and was first reported in November 1924; the 2 Pesos carmine rose was first reported in November 1924; and the 4 Pesos light blue was first reported in February 1925. All the values are known in imperf pairs. THe normal perforation is 11 1/2 but the 4 Pesos is also known perf 12. The quantities are unknown.
The Diaz Issue
Also lithographed by the Government Printing Works.
The 50c red
A proof on regular paper in black (sheet of 30) is known. This value was first mentioned in December 1925. It is known in perf 11 1/2, 12, 12 1/2, as well as 12 x 12 1/2 and imperf (pair).
The 1 Peso dark blue was first reported in July 1925. It is known perf 11 1/2 and imperf (pair).
There is a proof on regular paper in black (sheet of 30).
The 1 Peso emerald is first mentioned in October 1926 and is known perf 12, 12 1/2 x 12 and imperf (pair).
No essays or proofs are known to me.
The 1 Peso blue Columbus Issue.
This stamp was printed by Colombatti & Co. of Buenos Aires. The first mention of this stamp was in October 1925 and the only variety known to me is the imperf pair.
I record no essays or proofs for this stamp.
1c on 5c light blue
First noted in November 1926 it was stated to have had a printing of 200,000. I know of no varieties, essays or proofs.
7c on 40c rose
Also noted first in November 1926 and stated to have had a printing of 200,000. The varieties are: overprint inverted and overprint inverted partially doubled (printer's waste ?).
15c on 75c deep blue
First noted in November 1926 with a printing of 60,000. I do not know of any varieties nor of any essays or proofs.
1.50 Pesos on 1.50 Pesos Postage Due yellow brown.
Also noted in November 1926 with a printing of 45,000. The overprint converted the postage due to a regular stamp. No essays, proofs or varieties are known to me.
The 2c on 5c light blue
The first reference to this value was in April 1927. I have no information on quantity printed and I know of no essays, proofs or varieties.
The 50c on 60c magenta
First reported in March of 1927. The varieties are: Overprint inverted and Overprint vertical with "Habilitado" missing. (It is claimed that only two of these latter varieties exist!)
I do not know of any essays or proofs of this stamp.
A cover bearing a block of 10 of the Inverted Overprint as reported in the late 1920's but I do not know if it still exists.
The 1.50 Pesos on 4 Pesos light blue.
First reported in March 1927. I am not aware of any essays, proofs, or varieties of this stamp.
The 50c on 75c deep blue Official
First noted in June of 1927. I am not aware of the quantity issued, nor do I know of any essays, proofs or varieties of this stamp.