Rachel Reeves has swapped a portrait of Margaret Thatcher's Chancellor for one of a a founding member of the Communist Party of Great Britain.
The Treasury released a photograph of the Chancellor in her office in No 11 with a new portrait of Ellen Wilkinson behind her.
Ms Wilkinson, a former Labour education minister, was one of the founding members of the Communist Party of Great Britain in 1920 before becoming a Labour MP.
Photographs of Jeremy Hunt and Rishi Sunak at the same desk in Downing Street show that a photograph of Nigel Lawson was previously on the wall.
Asked about the portrait swap, a Treasury spokesman said: "Change."
It comes after Ms Reeves said she would replace all the pictures in the No 11 state room with paintings either "of a woman or by a woman".
Meanwhile a promotional video for the Budget released on Ms Reeves' social media tonight included a spelling mistake.
Purple text in big letters on a video said "difficult descisions" instead of "difficult decisions".
Ms Reeves will become the first female Chancellor to hold a budget tomorrow when Labour does its first one in 15 years.
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