Sumatra (Indonesia) chopmark ?

The chopmark on this Bolivian 8 Reales coin is generaly attributed to Sumatra by coindealers.
When asked, nobody was able so far to point to any article or book where to find this.
I have only been able to find that in the left upper quarter of a 1804 copper Keping token (Produced for Singapore merchands by the Birmingham mint) you can see exactly the same design.
A photo is not sharp enough to show this.
Has anyone more information about this chopmark ?
Thanks.
When asked, nobody was able so far to point to any article or book where to find this.
I have only been able to find that in the left upper quarter of a 1804 copper Keping token (Produced for Singapore merchands by the Birmingham mint) you can see exactly the same design.
A photo is not sharp enough to show this.
Has anyone more information about this chopmark ?
Thanks.
North and South American Silver Coins.
Chinese Silver Coins
Chopmarks
Chinese Silver Coins
Chopmarks
0
Comments
1-Dammit Boy Oct 14,2003
International Coins
"A work in progress"
Wayne
eBay registered name:
Hard_ Search (buyer/bidder, a small time seller)
e-mail: wayne.whatley@gmail.com
Obscurum per obscurius
It is full of suggestions and presumptions, but no hard facts. Same as my story about the left upper quarter design, in the in the arms of an Island of Sultana (struck over Island of Sumatra) Keping.
I look foreward to some real answers.
Chinese Silver Coins
Chopmarks