OK bros, final words concerning the Syracuse' tetradrachm. A true pro spe ancients answered me and told me he couldn't authentify the coin (too damaged) but was thinking it may be a well done repro. I wont take any risk and return it to the seller (hope he wont yap too much, but customer is king on ebay anyway). If it's real too bad, i said no to a $100 coin worth several times this amount, but if one day i want to flip my coins i want all of them to be 100% guaranteed real. Even 3% doubt isn't a risk i'm willing to take out of respect for myself and others.