Of course, there's no way that someone could measure the overprint from an image on a monitor without any reference as to scale. However, you can compare the fonts of the overprint against the images in the catalog of all the font types to get an idea of the overprint type. One noticeable trait of the Type V font is the letter "C". With Type V, the "C" is almost totally enclosed. Also the letter "L" has a large tail. This is evident in your image. Looking at the other letters would lead me to believe that the seller is correct as to the stamp's identity.
I second Michael#'s comments/opinions -
I would say it is definitely Scott #57.
I contacted the person that is selling this item and he says that the words Canal Zone which he says are the letters are 1.75mm high are the small letters variety could someone tell me whether it is or not. He says it is Scott #57 Michel 24VI
re: Canal Zone with Small Letters?
Of course, there's no way that someone could measure the overprint from an image on a monitor without any reference as to scale. However, you can compare the fonts of the overprint against the images in the catalog of all the font types to get an idea of the overprint type. One noticeable trait of the Type V font is the letter "C". With Type V, the "C" is almost totally enclosed. Also the letter "L" has a large tail. This is evident in your image. Looking at the other letters would lead me to believe that the seller is correct as to the stamp's identity.
re: Canal Zone with Small Letters?
I second Michael#'s comments/opinions -
I would say it is definitely Scott #57.