This is to certify that
His Grace (HG), Duke,
Adipati Kok Leong Tan Dutonagoro
is an official member of the Royal Family of Istana Mataram
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This is to certify that
His Grace (HG), Duke,
Adipati Kok Leong Tan Dutonagoro
is an official member of the Royal Family of Istana Mataram
