This is a copper dragon coin from the Chinese Province of Fukien on the southeastern coast. The Krause catalog (KM Y# 97.1) indicates that there are two versions, one with F K CUSTOM HOUSE and one with FOO KIEN CUSTOM, with the former (pictured) the more common. Krause reports these approximate catalog values:
FK CUSTOM HOUSE
worn: $4 US dollars catalog value
average circulated: $8
well preserved: $20
fully uncirculated: $50
FOO KIEN CUSTOM
worn: $150 US dollars catalog value
average circulated: $250
well preserved: $450
fully uncirculated: $1000
So you see there is quite a difference between these two when it comes to value.
At CoinQuest we are far from experts in the many, many subtleties of Chinese coinage. Our favorite expert on the matter is Calgary Coin and you may want to contact them for better information.