1891 (June 17): Cover from Sandakan to Amsterdam, franked with
1886-7 8 c. green tied by oval bar cancel, red Sandakan cds at top,
reverse
1891 (June 17): Cover from Sandakan to Amsterdam, franked with
1886-7 8 c. green tied by oval bar cancel, red Sandakan cds at top,
reverse with Singapore transit (24 Jun) and Amsterdam receivers (27
Jul), usual tropical toning, a scarce single franking
