point de charbon

Désignations

Codes : pays ou zone où la désignation a cours (CH, FR, DE, EU = Union européenne, INT = usage international). Une désignation barrée est déconseillée.

Définitions

anglais

A dark discolouration on the surface of a coin thought to be composed of organic material such as wood, sawdust, coal particles, etc., residing on the blank prior to annealing and reduced to a cinder by the extreme heat of this process. Removal is not usually possible without damaging the coin.