countersigns

v.

连署，副署，会签 （文件）( countersign的第三人称单数 )；

1. The back shows petroleum prospecting and the countersign is the same as the 5 yuan.
   此券背面图是石油勘探，暗号和五元券一样。
2. Traveller's check need countersign.
   旅行支票要复签。

Signs and countersigns
In the Event: Indigenous Countersigns and the Ethnohistory of Voyaging
Communication model, counter sign signal, method, and device
GPs Decide Not To Countersign Applications For Gun Licences
A digital contract countersign service platform oriented to supply chain market
Art. 74 of Constitution of Japan and "an influence of afterglow of countersign under the former Constitution"
Daniel Libeskind : countersign
Daniel Libeskind : Countersign
Countersign /
Starting out - I felt pressured to countersign for controlled medications: Student experiences in the real world of nursing