A painting that has gone on public display Friday could be the only portrait of England’s shortest-reigning queen, Lady Jane Grey, painted during her lifetime, according to the conservation group

Researchers believe they may have identified the only known portrait of Lady Jane Grey, the so-called “Nine Days Queen,” painted before her death.

An intriguing portrait believed by some to be of England’s ill-fated queen, Lady Jane Grey, could be the only one painted during her lifetime, research suggests — but not everyone is convinced.