black powder signal cannon View cart “Turn of the century fire helmet” has been added to your cart. View cart “Turn of the century fire helmet” has been added to your cart.$995.00Early 20th century black powder signal cannon. 14” long and 8” high black powder signal cannon quantity Add to cart Add to Wishlist Categories: Accessories, AmericanaRelated products Brass cigar cutter $650.00 Add to cart signed Japanese green glass float 2 $495.00 Add to cart Folk art, carved wood hand painted fish $395.00 Add to cart Period mirror with reverse ships painting $225.00 Add to cart