The era of Chinese Emperor ended in 1911 after the Xinhai Revolution.
The new Republic was founded on the first day of 1912 and several coins were issued to commemorate this event. Previously every province were issuing their own coins and this would be this first time were attempts were made to have a standard unified coinage.
Here are some varieties that are reasonably cheap to obtain:



Note that there may be varieties i.e. calligraphy differences, number of leaves etc.
This coin however is an interesting one and I bought this by pure luck:

This doesn't appear on the market very often - could be reasonably scarce. Maybe you would have some of these in your collection?