I'm just a novice at this, but it looks very similar to a Chinese Dragon Silver Coin, 3 Mace 6 Candareens. Unable to determine the year, but I believe these were made between late 1800's and early 1900's.
The inscription in the middle of the obverse side (right image) reads guang xu yuan bao which means the coin was minted during the Guang Xu reign (1875-1908) of Emperor De Zong of the Qing (Ch'ing) Dynasty of China. The inscription near the top rim is yun nan sheng zao which translates as "made in Yunnan Province". The inscription near the bottom of the rim reads ku ping san qian liu fen which translates as "treasury scale 3 mace and 6 candareens". According to a Chinese reference book, there are two versions of this coin: "old yunnan" and "new yunnan". The "old yunnan" has English on the reverse side and the "new yunnan" does not. Since I cannot see any English on the reverse side (left image) of your coin, you must have the "new yunnan" version. The reference states that "new yunnan" coins were made in 1908. However, the reference further states that there is the possibility that the coins were actually made in the 3rd year (1911) of the Xuan Tong reign of Emperor Puyi ("the Last Emperor") and that "additional research" is needed. Gary
