The flag is in a bad condition. It measures 300 x 400 cm. It shows the Dutch flag (red/white/blue) and, embroidered in silver thread, the word 'Simonoseki'. At the back the embroidery reads: "11 Julij 1863 / 4, 5, 6 september 1864" (these are the dates of the military actions of the ship). The red and blue segments of the flag are in silk; the white, with the embroidery, is made of cotton.
For more information about the ship and for illustrations, click here.
Rijksmuseum Amsterdam online catalogue (retrieved 14 September 2016).
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Illustration: "Z.M. Stoomschip Medusa forceert de doorgang door de Straat van Shimonoseki", by Jacob Eduard van Heemskerck van Beest, 1864 (Rijksmuseum Amsterdam).