Concern About A 1959 Gold Sovereign

Greetings! This is my first post after my introduction. I read the rules and I think this is the right place to post this. If not, please forgive me and let me know where to do so.

A few days ago, I was looking at a gold sovereing I purchased on january at a LCS. At first, I thought it could be a mint error, but I searched on the internet and couldn't find any sovereing with something like this.

Now I'm worried it could be a counterfeit, so I'm here to ask for your opinions. The size and weight of the coin are both OK, and also passed the "ping" test.

Thanks for your time

EDIT: forgot to mention that the error is on top of the word "REGINA", and there's another one similar (but smaller) in another place.

EDIT 2: the weight of the coin is 7.9 ± 0.1 grams, or 0.25 ± 0.01 troy ounces. Thats the error of my scale.