Pair of Dutch 18th Century Bronze Signal Cannons Signed and Dated 1750 and having coats-of-arms.

A fine pair of Dutch 18th century bronze signal or ceremonial cannons each signed at the breech "Cornelus Crans, Hague, 1750." Each has a raised coat-of-arms (unidentified) as well as dolphin form handles. They are mounted on what appear to be period, if not original, wooden carriages.
Overall length 15 1/2". Provenance: Alistair Sampson, London.