A rarely seen painting by Queen Mary is to go on display at London 's Masterpiece art fair . Interactive : Created in 30 years , the National Portrait Gallery has been kept out of the public eye for 1978 . Also on display is a super-sized pearl one owned by London 's Queen Mary I .
A rarely seen painting by Queen Mary is to go on display at London 's Masterpiece art fair . Created in 30 years , the National Portrait Gallery has been kept out of the public eye for 1978 . Also on display is a super-sized pearl one owned by London 's Queen Mary I .