Mark due to AR coating on Speedy Racing?

I'm a new owner of a Speedy Racing and I noticed this shape/mark (almost looks like the omega symbol) appeared. I tried wiping it multiple times with a microfiber cloth but it won't leave so I'm guessing it's on the inner side of the crystal. It also only appears at certain angles and typically with light reflected on it. Does anyone know why it's showing and how to remove it? Is it due to the AR double coating? Thanks in advance!

Thank you @Archer, this did the trick! I dabbed my microfiber cloth with some water and removed it entirely. While I was washing my hands water droplets must've somehow splashed and dried up on the dial. Good day! 😀