Aucune preuve d’authenticité de la part de ce vendeur condescendant, lors de cette transaction compliquée! A moi de faire expertiser la pièce si j’ai un doute: 
Voilà l’aide que m’a apportée CATAWIKI

The buyer had been actively participating in the auction for over a week, placing several bids. After receiving the winning coin, the artificial intelligence (AI) told him that the weight and diameter should be different. 
I suppose the level of complexity you mentioned relates to reading auction descriptions?

I don’t even know how to argue with something like that. :)

Fast service. The coin was exactly as pictured. I am very happy with it and the history it tells.

I received my parcel very fast and the coin is exactly how described. Thank you!

Hello,and thank you for the little Coin. The Coin comes today and it's a realy little one,smile
Thank you for Sendung and a good health weekend.
Mfg L.B.

Mooie munt, goed kontakt met de verkoper, kompliment
Grort, Ron

hi i purchased 2 antich coin from you and i got the pack yesterday every thing was perfect is 100 per cent pack the coin recive the pack on time every thing perfect thank you so much