Here you go: Gratian, AD 367-383. Roman Æ maiorina, 5.90 g, 21.4 mm, 11 h. Constantinople, AD 383. Obv: D N GRATIA-NVS P F AVG, helmeted, draped and cuirassed bust, right, holding spear and shield. Rev: GLORIA RO-MANORVM, Emperor standing facing, head right, on ship, raising right hand. Victory seated at helm. No wreath in field; in exergue, CONΓ. Refs: RIC 52a (unlisted officina).
My father went around the world. The maiden voyage of the QE2. The ports are listed on the reverse. They gave these tokens to the passengers. 1.27 ounces of silver.