Looks like an '18 d to me, which makes it a better date. Great job. As for the bump on the other, i have dug 3 coins with "air pockets" like that. I think water gets in tiny holes and freezes and expands over and over. Just my hypothesis at least.
Lol yes to some, even my gas rebate has a keeper in it (copper)
THANKS !
as usual now that I got out, need to wait another week for nice weather.
rain predicted through Saturday,
then more strong winds out of Canada & a cool down
Sunday