The portrait shows his right hand resting on a table which has an astronomical instrument on it.
A lost portrait which is thought to be of Sir Walter Raleigh has emerged for sale at auction - after an eagle eyed collector spotted it on eBay.
Raleigh, one of the most notable figures of the Elizabethan era, was locked up in the Tower of London after being implicated in a plot against her successor James I in 1603.
The painting, which dates from 1613, was initially bought on eBay for a 'fraction of its true value' by an European art expert who sniffed a bargain five years ago.
She has now consigned it for sale with auction house Duke's, of Dorchester, Dorset, who expect it to fetch £6,000.