Rickett's cannon?

[major bill]

One of Rickett's Battery F 1st Pennsylvania Light Artillery 3 inch Ordnance rife cannons is on display at New York Heritage Rail Trail at Hanover Junction Pennsylvania. #378 made at Phoenix Iron Company, Phoenixville Pennsylvania. This cannon was probably used at Gettysburg.

http://www.ydr.com/story/news/histo...on-used-at-the-battle-of-gettysburg/86956730/