"Acuñado" is the past participle of the verb "acuñar," which means to mint or to coin. In a polytechnical context, it can refer to the process of stamping metal to create coins or medals.
This word is used more in a written context, especially in technical or academic texts related to metalworking or monetary systems.
The archaeologists discovered a coin minted in the 5th century BC.
La medalla conmemorativa fue acuñada con una imagen del presidente.
Example: No te fíes de él, ¡está más acuñado que una peseta!
No tener las monedas acuñadas