Historically and traditionally the body of water between Arabia and Iran has been identified as the Persian Gulf. In the 1960s some Arab countries began to refer to the waterway as the “Arabian Gulf,” which until the end of the 19th century had been used to refer to what is now known as the Red Sea.
     The souvenir sheet issued in 2006 by Iran has four maps depicting the Persian Gulf. The map in the upper left corner is a woodcut Ptolemaic map from the Basel in the 16th century.
     The map in the lower right corner can be identified as Opulentissimi Regni Persiae — juxta suas Provincias recentissima et accuratissima Designatio Studio et fumtibus Matthai Seutteri, S. Caes. et reg. Cathol. Maj. Georg. Aug. published in Augsburg in 1720 by Matthaeus Seutter.
     In background of the souvenir sheet two maps across the bottom of the sheet are discernable, a third can be seen in the upper right corner. These maps are not identified, although they appear to be modern.