I found the following coin in a lot of coins.
It's from the year 18 (1929)

This side has the same picture as the K# 209 Dollar (Yaun)
But the other side is different.

This side looks like KM#Pn97,Pn99 and Pn100.
But the sails and waves are different and the symbol on the right also.
Measurments: Weight 29 gr, Diameter 45,3 mm, Width 2,4 mm, Edge Reeded and metal nickel.
Who knows more?
Thanks