desc_issuer: Abu Dhabi desc_denom: 20np Not used by any overprinted stamps. Matches 3 types: Abu Dhabi postage 3/30/1964 20np brtultra issue=1964 d=Sheik Shakhbut unwmk perf=14.5 Abu Dhabi postage 3/30/1965 20np dkbl&brn issue=Falconry dt=falconry d=saker falcon on gloved hand unwmk perf=14.5 Abu Dhabi postage 3/30/1964 20np brtultra issue=1964 d=Sheik Shakhbut unwmk perf=13x13.5 |