Unfortunately in my opinion, I'd say its a fantasy coin
1 Yuan (Memento: Birth of the Republic) - Republic of China – Numista https://share.google/Q1h8qdMXDdUPOkMaI
This is a genuine coin with the same obverse, i also searched a few others and found no genuine coins with the same reverse as yous
The 2 i did find were fantasy/replicas
1 Dollar - 1938 Japanese Conquest Of Shanghai One Year (Reproduction) - People's Republic of China – Numista https://share.google/Qig1DDuKNMoN6fTnc
1 Dollar - People's Republic of China – Numista https://share.google/GGaLFGei6oUGT3QPJ
If you would like to see if its silver which would help a case to say it could be a silver fantasy piece or perhaps a genuine coin that hasnt been listed on numista (one i wouldnt of seen here) you can do the magnet test
Sorry to disappoint.