Changes

These two guns are similar, but cast by different foundries. They are Royal Navy cast iron smooth bore muzzle-loading cannon, as are the other pairat the exit, and they bear the Crown and 'P' signifying they have passed proof, that is to say been test fired, and they are stamped with the Royal Cipher of George ll (reigned 1727-1760). One gun has a weight of 57cwt 0qrs 8lbs (cwt = hundred weight = 112lbs; qrs = quarter = 28lbs). The other gun would seem to be of very similar weight. Both are 32-pounder demi-cannon of nine and a half feet.<br />

Palace entrance gun 1was cast at the Waldron foundry near Heathfield in Sussex, at the time of John Harrison, Ironmaster. It is marked W on the trunnion (which is the trunnions are short iron protuberances protuberance each side which balance balances the cannon on the gun carriage enabling it to be tilted upwards as necessary) was cast at the Waldron foundry near Heathfield in Sussex, at the time of John Harrison, Ironmaster.

The cannon at Entrance Palace entrance gun 2 was cast a short distance away at the Heathfield foundry by John Fuller (marked JF on the trunnion). This trunnion mark was used between 1722 and 1745.