Government of Brunei, a group of progressive proofs for 50 ringgit (4), ND (1972), first; obverse and reverse, as issued, second; obverse without brown print, reverse as issued, third; uniface, obverse green on multicolour underprint, fourth; uniface, multicolour underprint, about uncirculated to uncirculated (4 notes)
TBB B109p, Pick 9p £360-460