I wouldnt touch it. Itll come out worse than it is. I agree with AA that it looks like a very nice high UNC coin but as he says theyre too common to be worth a great deal.
gEF for me. The 59y is slightly harder than some QE2 dates but isn't that hard to find with full lustre. This coin only has a little bit of lustre, a reverse rim nick and some wear. Still a nice coin but not UNC.
Thats an extremely lucky find so short into your collecting. Well done! Hold onto that one. It took me many many thousands of dollars of 20c to find one.
The 2c in the original post looks original to me. The obverse lettering has some fishtailing where the metal has flowed outwards instead of filling the die.