Egypt. Alexandria. Trajan. AD 98-117. Dichalkon (Bronze, 13 mm, 1.42 g). Dated RY 16 = AD 112/3. Laureate head right. Rev. Sistrum; L - Iϛ (date) across field. Geissen –. Dattari-Savio –. K&G –. RPC III 4776; Emmett – ((720) RY 16 unrecorded). Extremely rare, only four recorded in RPC. Brown patina. Very Fine. Ex Naville Numismatics Ltd., Auction 53, 03.11.2019, lot 248. A bronze dichalkon could not be missing in the collection, the small coin that barely exceeds the minimum, the chalkon that is almost unobtainable. Despite the size we notice a nice portrait of Trajan, easy to recognize, although the coin has no inscription. On the reverse, together with the inevitable date, we can see the sistrum, a musical instrument sacred to Isis and indispensable in the mysterious rites of this deity.