Help Identifying Indonesian Coin (1/3) [решено]

Hello! I was wondering if anyone could help me identify this Indonesian coin. It may be from the Palembang Sultanate era. Any information would greatly help!

The coin is about 18 mm in diameter.

Here's a good thorough article on Palembang coins with lots of photos. You might be able to find a match there. 

http://www.fsrcoin.com/palembang.html