That was my first thought, but Santa Dave said he thought that it was aproximately 28 inches high and 48 inches long. The specs on this piece are as follows. It is a little bit bigger but not much. Another view at the bottom of this post.
Total Weight: 362 pounds
Range: 3500 yards (2miles)
GUN TUBE
Material: Steel
Total length of tube: 3.83 feet
Length of bore: 3.43 feet
Travel of projectile: 3.10 feet
Calibre: 1.65 inches
Weight: 121 pounds
Grooves: 10
Twist of Rifling, uniform: 1 in 29.83 cals.
Muzzle velocity: 1298 feet per second
CARRIAGE:
Material: Steel
Weight, complete: 241 pounds
Height of trunnion axis above ground: 27.55 inches
Diameter of wheels: 37.4 inches
Track of carriage: 2.46 feet