A key object from this period is a ceramic vessel in the form of a mosque lamp with an inscribed date that is now in the British Museum. It is the best documented surviving piece of Iznik pottery and enables scholars to fix the dates and provenance of other objects. The lamp was discovered on the Temple Mount in Jerusalem in the middle of the 19th century and is believed to have been associated with the refurbishment of the Dome of the Rock initiated by Suleiman the Magnificent. Around the base of the lamp are a series of inscribed cartouches giving the name of the decorator (Musli), a dedication to the İznik Sufi saint Eşrefzâde Rumi, and the date of AH 956 in the month of Jumada'l-Ula (AD 1549). The lamp is decorated in green, black and two shades of blue. The design includes pale blue cloud-banks, small-scale arabesques on a green ground and a row of tulip buds in dark-blue cartouches. The lamp can be used to date a group of other vessels including some large footed basins. Although the basins are quite different from the lamp in overall style, each basin shares motifs present on the lamp.