The 19th-century sketches were made when she was still a princess and just 14 years old. Dated July 1833, they each depict a different figure on horseback – a knight, a woman, and a veiled woman, CNN reports.

They will be sold by Roseberys, which has set an estimated sale price of £1,500 to £2,500 for the Victorian album that contains the four sketches.