Stefani, that sort of stamps are always used as fillers...
Here is some info I took from a website (
http://www.idi.ntnu.no/~bjornmu/rcsfaq/ch11.html): The typical `dune' was a small Arab emirate that contracted with a European or American commercial enterprise to produce stamps. The printers chose topics quantities and distribution outlets designed to maximize profits. Often, stuff was issued with several varieties (imperf, overprints, etc...) to improve sales. Since the `issuing' countries actually existed, and a handful of the stamps sometimes made their way into the country's post offices they can't quite be called bogus, but their legitimacy is marginal at best.
They fall into three general groupings, the Trucial States, the Federation of South Arabia, and the (North) Yemeni Civil War.
Trucial States.
There were seven Trucial States, all of which are now member emirates of the United Arab Emirates. When the British withdrew their management of postal service in the area c1964, each emirate began issuing their own stamps. One (Abu Dhabi) maintained a reasonable issuing policy and doesn't count as a `dune,' but the rest went wild. The smallest (Ajman) apparently holds the world all-time one-year record at 488 issues. (My Harris Citation album call the seven emirates the `seven sandy sheikhdoms'.)
Ajman approx. 1964--1972
Dubai approx. 1963--1972
Fujeira approx. 1964--1972
Ras Al-Khaima approx. 1964--1972
Sharjah approx. 1964--1972
Umm Al-Qiwain approx. 1964--1972
Stamps were also issued for two `dependencies' (actually territorial enclaves containing single villages):
Manama (dependency of Ajman) approx. 1966--1971
Khor Fakkan (dependency of Sharjah) approx. 1966--1971
Federation of South Arabia.
Prior to 1966 the British administered a crown colony with a collection of protectorate sheikhdoms as Aden. Two of the dependent states, Kathri and Qu'ati issued their own stamps. When the British withdrew in 1966 (actually, I think it was "beat a hasty retreat in the face of Egyptian-backed communist insurgents") they left a government in place called The Federation of South Arabia, which issued postage stamps. The insurgents called their rival state the Peoples' Republic of Southern Yemen and were in control of the country in short order. During the brief period of the Federation's effective existence, four member sheikhdoms made arrangements with outside printers to issue stamps. Perhaps a handful of the first issues made it into some of the local post offices, but the local regimes were deposed long before new stamps stopped appearing on the philatelic market.
Kathri approx. 1966--1967 (legitimate stamps issued 1942--1966)
Mahra approx. 1966--1967
Qu'ati approx. 1966--1967 (legitimate stamps issued 1942--1966)
Upper Yaf'a approx. 1967
In 1967, Upper Yaf'a had no post office.
The (North) Yemeni Civil War.
The Kingdom of Yemen (sometimes called North Yemen to distinguish it from the aforementioned (South) Yemen) was driven from the capital city (San'a?) in 1962 by Egyptian-backed insurgents. Royalist forces, backed by Saudi Arabia, held out in the Northern regions of the country until the Saudi's extended diplomatic recognition to the Yemen Arab Republic in 1970. During the eight-year civil war, both sides used stamps as a means of propaganda and a means of raising revenue. With the Royalists defeated in 1970, the surviving Yemen Arab Republic settled down to a slightly more realistic issuing policy.
Mutawakelite Kingdom of Yemen approx. 1962--1970 (legit. 1926--c1962)
Yemen Arab Republic approx. 1962--1972 (legit. since c1972)
Other Entirely Bogus Entities.
Stamps have appeared on the philatelic market for Arab territories or Arab-sounding placenames which are entirely bogus.
Abd El-Kuri
Dhufar (a region in western Oman)
Government of Himriyya (actually a Trucial village)
Oman Imamate State (not to be confused with the legit. Sultanate of Oman)
State of Oman (not to be confused with the legit. Sultanate of Oman)
How do you know you're looking at a `dune' stamp? The signs are (1) big and colourful stamp, (2) A place name you probably can't find on most maps, and/or (3) topical themes that have nothing to do with the country issuing the stamps. Popular sixties and seventies themes for these things were the American space program, Kennedy, Churchill, the Olympics, etc...