Post some pictures of your coins and someone will be glad to help. If your "1776" coin matches the one in this thread though, it is a fake.
It is more common than you would expect. With the billions of cents around they have suffered damage in almost every conceivable way.
Who certified it? It isn't in a slab.
I don't see any error, just a normal well worn walking liberty half.
Just a normal 1990 cent, worth, one cent.
The rear penny? I think you'll have to be a bit more specific! Welcome to the forum!
Not worn or damaged, the zinc would be showing through if it was.
Like the others I only see a normal corroded quarter. Virtually no chance it is struck on a silver Canadian quarter. Anxiously awaiting edge...
Small date 1982 cents are very common and worth face value. It is the copper small date 1982 D that is valuable.
Looks like a plating blister.
Looks to be an old English coin. I believe it to be a George II halfpenny or farthing .
Sounds like your coin is just damaged. If it is bent it didn't happen during striking, it could not bend while in the dies. Pictures would help.
Simply a Philadelphia minted coin. Philadelphia did not use mint marks, except on the 1942 to 1945 war nickels, until much later.
I would put it in the low VF range. Really nice looking coin but I would not consider getting it graded.
Looks like the F didn't strike up well, either from die polishing or filled die. Nothing too unusual.
Agreed, just a normal coin with environmental damage.
Can you post a picture of the other coin?
That coin is a large date. No value above one cent, but welcome to the forum!
I am not sure what you are asking. Do you see something on this coin that you think is an error?
"Texas cent", can also be done with heat if you get the temperature just right.
Separate names with a comma.