photo via Belacqui.

Royal Ontario Museum description:

The Corinthian helmet type is one of the most immediately recognisable types of helmet, romantically associated with the great heroes of Ancient Greece, even by the Ancient Greeks themselves who rapidly moved to helmet types with better visibility, but still depicted their heroes in these helmets. …

This specific helmet (ROM no.926.19.3) was purchased by the Royal Ontario Museum in 1926 [at] Sotheby’s (auction of 22 July 1926, lot 160). A skull (ROM No. 926.19.5) was said at one stage to be inside it, and in this condition was excavated by George Nugent-Grenville, 2nd Baron Nugent of Carlanstown, on the Plain of Marathon in 1834.