1️⃣ Keycap Digit One

The Keycap Digit One emoji is a sequence of the 1 Digit One and ⃣ Combining Enclosing Keycap emojis. These display as a single emoji on supported platforms.

Keycap Digit One was approved as part of Unicode 3.0 in 1999 and added to Emoji 3.0 in 2016.