We just save our change every month then at the beginning of the month it goes towards a bill. It's amazing how fast it adds up!
Probably no silver, but if you're one of those error hunters, you may find something if you're dedicated and really go over each coin with a fine tooth comb. I never had the patience.
My guess would be a wheat penny or two, and a few pre-1960 nickels. Last time I went through a jar that size there was a war nickel in there. Girlfriend's roommate had a 1918 Mercury in her stash - not caring about such things, she gave it to me
in a mixed jar like that I would like at 2005 p ocean in view nickels for ddr's and the state quarters have so many errors its ridiculous. ddr's, cuds, retained cuds die chips, die clashes, off center partial collars, etc... even a misaligned die can be worth over $8 on the right coin of any denomination to the right collector