I can zoom in quite far, but it’s a bit too blurry to really tell what’s going on with the stamp. If I looked correctly, you mean some small black smudges (three if I looked correctly) at the inside of the “1”?
And I have seen some smudge 1st edition stamps before (although a lot more than the ones you have), like this one from @shizzlemetimbers :
And I know what you mean with not being able to zoom in properly with your camera… Mine has the same issue, especially when it’s pretty dark in my room in the evening.
Since I collection Pikachu cards, and I’m a sucker for the Base Pikachu (here is an article I wrote), I’m always interested in variations I don’t know about yet. 
Greetz,
Quuador