Watch List notes:

(x) Government of Brunei, a group of progressive proofs for an issue of 50 ringgit, ND (1973), green and multicoloured, Sultan Hassanal Bolkiah I at right in military cap, value at centre and at each corner, reverse green and white, also a sheet of two partial obverses, no text or Sultan, reverse green and white, another identical sheet of two but with blank reverse, also a sheet of two obverses with Sultan and all detail missing except for a multicoloured guilloche low centre(Pick 9 for type, TBB B109 for similar), a most unusual and interesting group, very rare (8 notes in four pairs).

Estimate: £1200 - £1800