I had posted these in another thread, but the thread was more of a general purpose thread. These date between 1901 and 1929. I have three of them. One fully sealed and the paper band says they are No 12 caps. The other two, one appears full and the other is missing perhaps a dozen caps. Any idea what a No 12 cap would be used for? I am keeping these for display purposes only, but any idea as to value? Given to me by the brother of my gunsmith friend who recently passed.