Those wacky wizards at e-bay now bring us coins from the future! https://www.ebay.com/itm/202094681369?ul_noapp=true
At the beginning of his details page, which is a trip, he says they don’t know what it is, other than not silver. At least he’s frank.
Wiki, a source of knowledge since 4 o'clock says the earliest coins are from 700 BC. So that first link is wrong 2 ways. My ancient collection consists of one (good condition) Valentinian II, date approx. 375-392 AD. 5 bucks at a flea market 15 years ago, they had another one for 3 but this one is in much better condition.
Looks really fake. I'm no expert in early Athenian tets, but the style looks completely off for an early Athenian Tetradrachm. I'm sure if you posted this in the ancients forum, people would get a good laugh out of it. That's how bad a fake it is. Here my middle style Athenian Tetradrachm minted around 400-380 BC, and quite genuine (unlike that eBay monstrosity from "3000 AD"). Attica Athens AR Tetradrachm (22mm, 17.10 g) Athens Mint, 4rth Century BCE Helmeted head of Athena, r. Owl standing r., head facing, olive sprig and crescent to l; AOE in r. field. SNG Copenhagen 63ff. PS: I just noticed the seller is in Greece. That alone is enough to condemn the coin. Any "ancient coin" coming from Greece is almost guaranteed to be fake.
All of that seller's items seem to be like that. Gobbledegook explanations which say nothing and with no return.
That listing includes my nomination for Spelling-Error-of-the-Year: "... no was Ark ..." Especially funny given the Seller's ebay name.
If someone is so dedicated to numismatics as to use their time-traveling abilities to bring back ancient coins from the future, we should at least give them credit for their inventiveness.
That entire listing is full of crazy. Why would anyone ever even get involved with a seller like that except for what you consider to be an insignificant amount and just for grins and giggles? Then again, his "English" is better than my Greek.