Ok.. That's not an actual number 4 created when the coin was minted. That's a hit that looks like a number. As I stated.. Pareidolia.
1st coin is a 1955 Canadian Cent. Circulated. Neat but nothing major. 2nd coin is a US Indian Head Cent. Circulated. 3rd Coin is not a US minted coin but a novelty Copper bullion medallion. No value in that.
No need to be sorry.. 1919 Cent. Worn. It's ok. What do you need to know about your coins. All are common. Nothing major.
1919.. In average condition.. 35 Cents Yours is less than average http://cointrackers.com/coins/13527/1919-s-wheat-penny/
As usual, Paddyman is on target with these. The 55 Canadian is too worn for any premium, the IHC might have some value if letters of LIBERTY are still visible in the headband, but not more than 3-4 bucks with that wear. Check for yourself using a redbook for grading and NGC for ballpark value. The copper round is a commemorative attempt of the real, gold $50 double eagle from 1933, of which, all were confiscated by the Feds. I believe you can see one on display at the Smithsonian in D. C....Spark
1980 damaged,Canadian Penny worth keeping,1902 Indian Head quite a few of them not a low mintage date but a keeper, 20 Dollar gold piece a very good coin, hang on to it,