After which of these women was a humorous unit of beauty named?

These days we break a bottle of champagne against a ship being launched. Helen of Troy's face must have been badly mashed if they used her to launch ships back then.

Yikes! A face that looks like it launched a thousand ships!

She had quite a mug.

Helen was considered a unit of beauty?

How puerile! If Homer is to be believed the Trojan war was a comedy of errors so blaming it on a female was the easiest way out.