I haven't seen anything like this online anywhere but maybe I am looking in the wrong place. I have included a picture of a normal eye from a different dime for comparison.
Can anyone please help me identify this anomaly?
In the past year of collecting I have found only 2 others that are very similar but are not the same year and only on Dimes. As far as I can tell no other denomination has been effected with anything like it.
The first photo is my coin and the second is a normal dime.
Has anyone else ever noticed something like this before?
I don't think the photo you used as a comparison is from the same year, it looks like a newer dime.
Slight differences like these are probably due to design variations. Every once in a while the mint will make new master hubs that may have a number of small differences compared to the previous hub used.