The calibre of the cannon is almost certainly 3-pounder although 4-pounder is given in one piece of contemporary correspondance. The original carriages were of the 'Butterfly' or 'Grasshopper' type, with no provision for a limber (Spicer to Simcoe, 16 May, 1800). The present carriages were constructed as copies of those made for Simcoe by the Ordnance Office, the Tower of London, in July 1800; the present iron parts date from this period.
Mathias Solano was Director of the Royal Gunfoundry at Seville (Hispali), circa 1703-1755.
Details of the transcribed Simcoe correspondance, together with biographical notes, are available upon request.