The U.S. Department of Treasury has confirmed that it is going to put a female face on a new batch of $10 bills, the identity of the woman remains a mystery, but is due to be announced later in this year.
The internet has been quick to offer some suggestions...
The $10 bill will run in tandem with the current note which features Alexander Hamilton - one of the US's founding fathers and the founder of its first national finance system.
The last woman to be featured on US currency was first lady, Martha Washington who was on a $1 Silver Certificate from 1891 to 1896.
Women appeared on all incarnations of Irish bank notes between the foundation of the state and the introduction of the euro.
Each bill in the original series issued by the Free State had a drawing of an unidentified woman (possibly Erin) in a shawl with a harp.
These notes circulated between 1928 and 1977 - she also appeared in the watermark on subsequent series, and is believed to be based on Lady Lavery, wife of the artist who drew the illustration, Sir John Lavery.
They were replaced by Series B notes, its green £1 note featured an illustration of Medb, the Queen of Connacht from Irish mythology.
While Mother Catherine Elizabeth McAuley who founded the Sisters of Mercy in 1831 appeared on the final £5 note until the punt was replaced by the euro in 2002.
