A pair of 19th Century signal cannons

A pair of 19th Century signal cannons
cast bronze each with tapering two-stage barrel with cast relief decorations at muzzle and main body, indistinctly signed above the touch hole, swamped at the muzzle, plain trunnions and cascabel, and one touch-hole, on [later] wooden carriages of naval type with brass mounts on four wood wheels.
15 in. (38.1 cm) barrel; 1 in. (2.5 cm.) bore. (2)