I agree with both above, especially being exactly the same, but will add that if you are referring to what appear to be lite incuse lines on the tops of E & T, those can occur from incomplete cold metal flow filling the letters.
Doubled dies are exactly that, doubling on the dies. It doesn't happen because of the strike, that's md. Every coin made from the die will be exactly the same because the design is doubled on the die. That's why I said exactly. Md is caused by movement of the die during the strike.