The invention relates to an anti-counterfeiting
nickel-clad steel
coin. Invisible patterns, miniature characters and secret marks are arranged on the front face and the back face of the
coin at the same time, edge rolling characters are arranged on the edge of the
coin, the invisible patterns are double-face invisible patterns, the
engraving depth of the invisible patterns ranges from 0.01 mm to 0.09 mm, and the angle of an
engraving knife ranges from 15 degrees to 40 degrees, wherein the miniature characters are letters, numbers or
Chinese characters, the
stroke width is smaller than or equalto 0.1 mm, and the character height is smaller than or equal to 0.35 mm; the secret mark is a pattern formed by combining letters, numbers or dot lines, the
stroke width of the secret mark is
smallerthan or equal to 0.1 mm, and the character height is smaller than or equal to 0.35 mm. Various anti-counterfeiting technologies are integrated on the same
nickel-clad steel coin, so that the problemof single anti-counterfeiting technology in the prior art is solved, the public anti-counterfeiting level and the
machine-readable anti-counterfeiting capability of the
nickel-clad steel coin are improved, Meanwhile, the process is improved, so that
processing and
processing of various anti-counterfeiting technologies can be carried out on the nickel-clad steel coin made of hard materials.