Another tin coin i think from Indonesia

tin cast

wt 54 g

dia 15.5

another one my notes say Palembang but can not find. Thank you very much. Iam emptying jars of keeper but need more work. thank you for any help, daryl 

Might be a variation of this: N#85525

Check the subtypes from 5.1 to about 5.40-ish: http://www.fsrcoin.com/palembang.html

 The closest match is 5.7 but not good enough