American and Vatican coins identification

Hi guys,

I am trying to find some information about some coins belonging to my mother. I am not selling them, it is more out of curiosity. I am into banknotes, and I have no idea about coins. I can see they are not in pristine grade, one is mounted in a keychain of some sorts, there are dents, stains, etc. As far as I could find out, there are two Double Eagle Liberty 20 Dollars. However I had difficulties to determine the mint sign, I think they are S both. The others, there are so many variations that I was overwhelmed. There are two coins which seem to be from the Vatican, but couldn't find these anywhere.

Any help these coins, like catalog id (KM or however you catalog coins) and maybe a rough value would be appreciated (I mean rough, I know precise estimations based on pictures is not really possible).

And again ... NOT FOR SELL

Thanks in advance,
Ildaro

.

5$: https://en.numista.com/catalogue/pieces18809.html
10$: https://en.numista.com/catalogue/pieces16134.html
20$: https://en.numista.com/catalogue/pieces23125.html
KM# are listed in the coin information on the right.
The NGC site will give you rough price estimates. For instance: https://www.ngccoin.com/coin-explorer/liberty-head-20-1850-1907-pscid-69/1901-20-ms-coinid-19039

The Vatican piece is most probably a medal, similar to this one: https://en.numista.com/catalogue/pieces199620.html

Hey thanks a lot, the S and the CC next to the year is the mintage, correct?

I found the following about mintage and how to find identify, if you have something better very much appreciated:
https://www.usmint.gov/learn/collecting-basics/mint-marks

Thanks again!

Regards,
Ildaro

That's the mintmark (where the coin was made). 'S' = San Francisco, 'CC' = Carson City.
https://www.usmint.gov/learn/collecting-basics/mint-marks