I slab pennies and nothing else for reasons i have mentioned before.
If they dont reject any and give just a grade i cant see any benefit sending them as i dont want to sell any and the grade is not far away from reputable opinion
I cannot believe they say .... we will charge you for conservation so you have a decent coin.
After just reading the NGC site its not something i can get my head round
I only collect copper/bronze pennies..... surely they should say....... Buy another ,the one you have has problems,not we will clean it