Auction 333-341 Nigeria, Cameroon, Sudan & Worldwide Postal History - Day 4

Sarawak 1869 (March 1): 3 c. brown on yellow, perf. 11, a used example on small piece of incoming cover, cancelled in manuscript ink "6/11/69" and overlapping Great Britain 1867 1 s. green pl. 4 tied by London SW14 duplex (Sept 14, 1869) struck in black. Exceptional piece and very rare, just six pieces are recorded bearing this stamp and no usages on cover are known. Rare.
Provenance: Robson Lowe, London 25 Sept 1984; 'Stolz' (Ted Proud) collection, Spink, Singapore, 21 Sept 2011.