Byzantine Ribbed Bronze Bowl

Composed of a broad hoop with gently chamfered upper and lower edge, openwork bezel with monogram to top; early Byzantine or Lombardic. 10.48 grams, 32.95 mm overall,18.10 mm internal diameter (approximate size British P 1/2, USA 7 3/4, Europe 16.26, Japan 16)



Acquired 1990s-early 2000s. East Anglian private collection.

Bearing a central hand motif and surrounding inscription in Greek letters 'K E R A Y I O I T H I M (?)' probably the mark of the producer. 239 grams, 10.2 cm



Acquired 1990s-early 2000s. East Anglian private collection.

Museum collections hold many stamps or seals of different forms, materials and shapes, some bearing inscriptions or images. These could have been used on bread, dough or on fresh clay to stamp amphoras, bricks, lamps and other clay objects.

Of piriform shape with a band of stamped roundels to the shoulder; intended to be filled with explosive liquid and wick and used as a hand grenade. 664 grams, 11.6 cm



Acquired 1990s-early 2000s. East Anglian private collection. Accompanied by an academic paper by military specialist Dr Raffaele D'Amato, dated 15 July 2019 and titled 'Eastern Roman Empire - Greek Fire Bomb or Hand Grenade (μεσαίον kακάβιον) 9th-11th century AD'.

Apart from the use of siphons or manual flame-throwers called cheirosiphona, special corps of Roman soldiers employed terracotta grenades, in the form of small jars, abundantly evidenced in archaeological excavations. Such were the γανωτα, vessels (sometimes also of bronze) used for Greek fire. They were called μεσαία kακαβιά or κυτροκακάβια where the former had a bulbous shape and the latter a more cylindrical form.