In regard to the 14½, no one knows how many were made but I personally think the number is somewhere around 10,000. Part of this is based on the fact that 4000 were ordered for the British Navy for use in WWI. JP Morgan was the agent for the British government, and the order is dated October, 1915, I believe. I have it in my files but am too lazy to dig it out. Anyway, Britain contracted with the Canadian Proof House to send representatives to the factory to proof the rifles. They also purchased 20,000 44-40 rifles from Winchester, and these were also to be proofed by Canada. After the war, maybe as late as 1926, the rifles were sold as surplus, and they ended up in Canada, Australia, New Zealand, South Africa, and, of course, the United States.
The British navy, in WWI, used them primarily in the coastal defense role. I believe they were used on small patrol boats and the like. One in Australia was used after the war as a prison gun. Perhaps some found a similar role in Canada