It's not a coin, fantasy piece or charm.
It's a medal.
You can read about it in English
here.
However, the English description does not translate the inscriptions on the medal.
Regarding the OP's left image, the inscription at the top is
fuzhou, which is a city in Fujian Province. Written vertically in the middle is
chuan zheng cheng gong which means "Shipyard success".
The OP's right image has at the top
da qing which means "Great Qing". Written vertically down the middle is
yu ci jin pai which means "to bestow imperially gold medal".
This Chinese article explains that several of these gold and silver medals have been obtained by the
Chinese Shipyard Culture Museum.
Please note that the Stack's Bowers
silver medal has the inscription "to bestow imperially silver medal" while the OP's medal says "gold medal".
Since the OP's medal is obviously not gold, it cannot be authentic.
Gary