From your description, it sounds like you have a medal or token, not a coin. A coin will normally list the country it was minted it, its denomination, and the date of issue. You have not described your item as having any text or numbers - this is usually a tell-tale sign of a medal or token.
We have taken our best guess about your item. There are plenty of coin-like objects with angels on them, so this may not be your piece, but this one is quite common and fits your description. It is made of gold-colored base metal.
Such medals or tokens, with little or no wear, attractive eye appeal and colorful toning, may sell to a collector for a few US dollars. It is unlikely that it has much numismatic value, that is, value to coin collectors. Typical values run like this:
worn: less than $1 US dollar
average circulated: $1
well preserved: $2
fully uncirculated: $5
An anonymous commenter has informed us that these tokens are sometimes handed out to people who donate to the Catholic Relief Services.