It’s difficult to get a photo of the over date but it’s there. It has been identified but it’s not graded by a TPG. Inside the 9 on the top right I can easily see a straight line in hand. There are a few varieties of this. Hopefully you can see it. There is also part of the 7 showing on the inside of the lower right as well.
I absolutely believe you. I'm having trouble seeing it, I do see some "shading", maybe, that I'm sure is the 7. Just to make sure, why don't you send it to me and I'll give you my "in hand" opinion! I'll PM you my address. .