Well, that's cool. It is, obviously, a good luck token (not a coin, a token). Tokens with horseshoes and 4-leaf clovers are very common. A modern one is shown in my picture. If you do a google search on 'good luck token' you will see *oodles* of different patterns.
So, I tried to find one like your daughters, but no luck (so to speak). This may mean that the pattern on yours is somewhat rare. Even the mighty tokencatalog.com does not have one like yours. They have 277 tokens with inscription 'lucky coin,' but none of those 277 look like yours. If you do a search for 'luck' on our home web site (https://coinquest.com), you will see 23 examples from around the world, including from India, Tibet, the Philippines, China, Germany, and the US.
Try cleaning your token with plain soap and warm water. Do not clean it with anything else.
Your token might be worth $5 to $10 US dollars to collectors of such material.
Heath -- Just call it "the Stumper!" There are some sharp numismatists (coin collectors) over at:
They also have token specialists. Give them a try, if you haven't already.