A rare ancient Greek helmet is heading to the auction block, where experts expect it to sell for as much as £90,000 (roughly $111,000). Made between 500 and 450 B.C.E., it’s “one of the best ...

If you want to buy a rare 2,500-year-old helmet that belonged to an ancient Greek warrior, this very artifact is heading to the auction block, where it is expected to sell for roughly $111,000.

Such helmets were iconic of the ancient Greek style of infantry fighting and have become emblems of the ancient world. The Apollo Art Auctions company, which is auctioning the item, said the ...