put them in a glass of coke
You can use polish to make that old vase shine again, but make sure it won't damage your vase first.
Banks don't buy old coins, coin dealers will buy old coins, some jewelry stores will buy old coins, banks will take your old coins at face value and then sell them to coin dealers and and make some profit.
you can get 64 shine sprites and 64 star coins.
64 shine sprites, 64 star coins,and 3 keys.
I have done this experiment on a penny. Yes it works, but it only works sometimes. I would give this three stars. If you want to shine coins, then you will have to find something else.
64 shine sprites and star coins on super Mario 63 on newgrounds.com
make it shine
Make Me Shine was created on 2001-08-27.
Both last a long time, but they get worn down and change color, and lose their shine.
wipe with a very light acidic solution - like diluted vinegar. if you have any south Indian friend, their sacred ash can clean old coins much better. they don't mind lending you a bit.
U Make My Sun Shine was created in 2000.
There is no patron saint of old coins.