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Here is an example of this rouletting, in a small gauge. A similar form is called serpentine perforation. It is here shown. Still another form leaves the edges of the stamps in sharp points. This is called percé en scie or saw-tooth perforation. When this perforation is very fine it is called serrate. There is still another form of rouletting, which we also show you.
These points receive ink the same as other parts of the surface of the plate and the effect thus produced is called rouletting in colored lines. There are a number of systems which produce the effect of rouletting in a variety of fancy forms. One is called percé en arc. This produces a series of arches on one stamp and a series of scallops on the adjacent one.
It is called rouletting in oblique parallel cuts and consists of a row of short cuts placed obliquely and parallel to each other. Stamps thus rouletted have a very ragged edge when torn apart. This roulette was only used in Tasmania and was a private production. One of the nightmares of every government is the fear that its securities will be counterfeited or tampered with.
There is another form of separation called rouletting, from the French "roulette", a little wheel, its simplest form being produced by a small wheel with an edge of sharp points. By this process a series of small cuts is made between the stamps but none of the paper is removed. In these two illustrations are shown roulettes of large and small gauge.
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