Old Colonial Era Coins Found

My grandfather, who died about 10 years ago, gave me a coin purse and told me the coins were very old. As a teen, I looked through them very quickly and then put into a box. Twenty years later and I just found them again and have spent a few hours looking at the coins. He was an avid metal detector...er, ist, user? Anyway, I believe he found these over the course of 30 years and couldn't identify them enough and put them in the purse.

I believe a couple are large one cent pieces (I can see the "one cent"), which is why I think the others are Colonial. The remainder are mysteries. I am tempted to clean some to help me identify, but I am nervous about ruining.

If anyone has any ideas or thoughts... it would be much appreicated!