[ad. F. contremarquer (16th c. in Godef.), f. contremarque (see prec.).] trans. To furnish with a countermark: see prec.

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1611.  Florio, Contrasegnáre, to countermarke.

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1665.  J. Webb, Stone-Heng (1725), 7. He hath … countermarked them with the Letter B.

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1726.  Farrier’s Dict., 143 (J.). A Horse is said to be counter-mark’d when his Corner-teeth are artificially made hollow…, a false Mark being made in the hollow Place, in Imitation of the Eye of a Bean, to conceal the Horse’s Age.

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