Lithographed, on medium, white wove paper
There are ten varieties each of the 5, 10, 20, and 50 c., and six varieties of the 1 peso.
All Genuine stamps with the exception of the small 50 Centavos value show damage of the inner frame above the "S".
This is the first thing to look for when expertising.
Genuine Issues
2 Types of the 50c
First Forgery
Attributed to Spiro
The top of the 'A' of 'COLOMBIA' is very broad in these forgeries (it is pointed in the originals).
The background dots are large and show curvature.
The letter are very uneven.
There is no period after the "U"
The bell does not touch the frame.
Note the typical Spiro cancels,
Second Forgery
Posibly sold by Fournier
The stars are larger
The letters are uneven
"CENT" has no dot
The "A" has a flat top
Background dots are very different
Third Forgery
Possibly from Torres
These forgeries are often sold as "Proofs"
There should be nine stars between the oval and the inscription.
The shield is totally different from the genuine stamps; it has two horizontal white sections in it.
Bottom ornaments moved towards the value and are not touching the outside frame line
No periods after ·E· and ·U·
Bad and irregular lettering