1An additional mark placed on something already marked, especially for increased security.
（多指为了增加安全的）附加标记；副标志
Example sentencesExamples
Beside the countermark, this copy is easily distinguished because of the casting marks on the obverse.
At our last meeting Richard Baker gave another in his series of talks on countermarks or stamps.
Any earlier coins that show a countermark do not indicate a date when later coins were countermarked.
On the other hand, the obverse countermarks show a rather careless placement on the imperial portrait.
These countermarks could have been stamped in about 36 C.E, the period when Pilate left his official post.
1.1A second watermark.
第二条水印
Example sentencesExamples
Such watermarks are common in papers of the eighteenth and early nineteenth centuries, and they often have a countermark giving the manufacturer's name and/or date.
The countermark in the paper of the drypoint The Forge 1871 belongs to the firm De Erven de Blauw c.1822.
Definition of countermark in US English:
countermark
nounˈkaʊn(t)ərˌmɑrkˈkoun(t)ərˌmärk
1An additional mark placed on something already marked, especially for increased security.
（多指为了增加安全的）附加标记；副标志
Example sentencesExamples
These countermarks could have been stamped in about 36 C.E, the period when Pilate left his official post.
Any earlier coins that show a countermark do not indicate a date when later coins were countermarked.
On the other hand, the obverse countermarks show a rather careless placement on the imperial portrait.
At our last meeting Richard Baker gave another in his series of talks on countermarks or stamps.
Beside the countermark, this copy is easily distinguished because of the casting marks on the obverse.
1.1A second watermark.
第二条水印
Example sentencesExamples
Such watermarks are common in papers of the eighteenth and early nineteenth centuries, and they often have a countermark giving the manufacturer's name and/or date.
The countermark in the paper of the drypoint The Forge 1871 belongs to the firm De Erven de Blauw c.1822.