(Note: The pictured “Diskobolus” is a copy of a lost statue by the Athenian sculptor Myron from the time around 460 BC. But, there are existing several copies and similar statues in contemporary museums. However, the statue pictured on this stamp is not (how often described) the Townley-statue from the British Museum in London, rather it is pictured a similar statue from the “National Roman Museum Palazzo Massimo alle Terme” in Rome from the time around 140 AD. (One considers mainly the arms and the discus.))

(Probably. Quotation: "In 1963, Great Britain ceded responsibility for the Trucial States' postal system.", So, all stamps of the so-called "Trucial States" were printed either in England or in Austria (the latter mainly Emirate Ajman). All other issues not listed in the catalogues and/or with lesser print quality (and mostly postmarked as CTO) are so-called "dunes issues" and as such seen as pure maculation created with the aim of financial fraud. The former Emirate Umm al Qiwain was one of the "Trucial States".)