A Winston Churchill artwork, Troops Going To The Front, will auction tomorrow.
The oil on canvas, which the future prime minister painted while a cabinet minister in 1927, is expected to make up to £250,000 ($371,550) at Sotheby's London.
The 50 by 61cm piece depicts troops leaving for the first world war from London's Victoria Station, and was inspired by a wartime photo by the celebrated FJ Mortimer.
A prolific artist, Churchill rarely painted wartime scenes. This would be his last, as Sotheby's Lydia Wingfield-Digby explains.
"It is a rare piece of art by Winston Churchill.
"He was a prolific artist but would paint to relieve himself from the political pressures.
"He would normally paint views while on holiday to switch off so only a few pieces depict war.
"Churchill served on the Western Front so he understood the evocative nature."
The piece has superb provenance, which is sure to add extra appeal for collectors. It comes from the collection of Churchill's private secretary, Rab Butler - who received it from Churchill as a gift.
Another Churchill painting, Flowers In A Green Glass Vase, is also up for grabs, with an identical estimate.
The wartime leader's artwork sells for large amounts.
In December, his The Goldfish Pool at Chartwell smashed its £600,000 high estimate to make £1.7m ($2.6m) at Sotheby's.
Please sign up to our free newsletter to receive exciting news about art and photography auctions.
Guides and analysis