Government of Brunei, 5 and 50 Ringgit 'Specimen/Proof', no date (issue of 1973), green, brown/green respectively, similar designs with Sultan Hassanal Bolkiah at right, watermark of himself at left, the reverse shows a vignette of a mosque,(Pick 7 and 9 for types), various ink annotations, otherwise about extremely fine, scarce (2)