Demande de précision

Bonjour, je partage avec vous la trouvaille de mon père.
Il semblerait que c'est une pièce de monnaie coloniale américaine de 1776, je sais que pas mal de reproduction ont été faites.
D'après mes recherches, l'originale doit peser 5,6g, celle que je possède pèse 5,5g.
Pour moi, la perte de poids vient de "l'entaille" qui se trouve sur la pièce.
Qu'en pensez-vous ?

Très probablement une copie !
Un forum US donne cette info :
"These pieces are basically considered all fakes made from the early 1900s until just recently. Even the "original" examples that have sold over the years in prominent collection have recently been brought into question as to their authenticity. There are literally thousands of fakes of this coin and most do not have the word copy on them. Your piece looks from the picture to be a Peter Rosa copy made somewhere in the 1960-70s. They are cool pieces and are normally found in collections just to fill a hole. They do not have much value as they are known to be counterfeit, but they do hold collector value if they are of great quality. Hope this helps. (Cited from: https://www.cointalk.com/threads/1776-american-liberty-coin-real-or-fake-help.145373/)

Merci pour l'info