Nickel Year?

Is this a error?

1955 N/M

Is this worth anything?

1963 D penny

Is this a error?

1969 S nickel

On Utube said if the stairs was visible could be worth money

1918 D walking liberty

Is this worth anything?

Why

Is this ruin the value of coins

Penny on done plachet

What is this worth

CoinsChecker on the web

You can now share your collection on the web. Your link to profile would be coinschecker.com/yourname. Mine as example is coinschecker.com/alekseilevin/

Morgan’s

1969 penny

No mint mark Cheek has dent Doubled lettering? I’m new to coins but find it very interesting about history of each coin year. New Hobby and I appreciate all feedback. Thank you.