Four years after her first tweet

Followers of the official Royal family account were graced by a particularly different Instagram post today. Instead of photos of the royals performing their royal duties, it was a photo of a letter, posted by Queen Elizabeth herself.

The 92-year-old monarch was visiting the Science Museum on Thursday, March 7, when she was particularly taken by a letter written to Prince Albert—her great-great-grandfather—by mathematician, inventor, and the world’s first computer pioneer, Charles Babbage in 1843.

The Queen further detailed that it seemed fitting for her to publish this post after learning about children’s computer coding initiatives, especially “at the Science Museum which has long championed technology, innovation and inspired the next generation of inventors.” The post was signed off with “Elizabeth R.”

The milestone Instagram post was published as she stood at a glass lectern and gently tapped "share" on an iPad. This comes 43 years after she became the first monarch to send an email in 1976, and four years after the Queen’s first tweet, made in 2014.