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6 cuartos
Forgery 5
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  I've been trying to come up with a list of characteristics to help distinguish a genuine 6c from a forgery. But there hasn't been, at least to my knowledge, a problem with forgeries for this issue. The modern day photographic forgeries on thin paper are about the only ones that might fool someone, and only because they are replicas of genuine stamps.

The one detail that seems to be lacking in all the forgeries I've seen is this:

The background mesh is comprised of horizontal and vertical crossed lines. There is a thin white gutter between the central area of corssed lines and the outer frame. Some of these crossed lines that form the background mesh extend beyond the confines of the central area into the thin white gutter (detail). There are some extended lines that are consistant on each and every position in the plate, such as the 2 lines just under the numeral 6 in the top inscription (detail) and others are unique to particular positions. Some are not as distinct as others, but every 6c will have some. The modern forgeries also show some of these lines, but they are not as distinct.

There is also a small "knob" of black color in the upper left corner of the central design area, that protrudes into the thin white gutter (detail). It seems to be missing on most forgeries, with the exception of the photographically produced replicas of modern times.


This forgery, or for a better word replica, is printed on thin white paper. It is taken from a photograph of a genuine stamp and contains many, if not all, of the identifying characteristics of a genuine stamp. For some reason though, the forger decided green would be a nice color to make this usually black stamp and compared to the genuine at left, the background lines are dark and heavy, running together in alot of places, which together with the thin paper and wrong color, are the easiest ways to distinguish it. It is stamped "REPLIK"(detail) on the back and is thought to be the product of Peter Winter.(read more about Peter Winters forgeries HERE)

Although this copy has impossibly large margins, watch out for trimmed down copies. Also, be aware that these have been offered on ebay as "proofs". Proofs in green DO NOT EXIST.