I attended the Denver gun show last weekend, and ran into these old Frankford depriming tools, and case. Dirt cheap, and they appeared to actually be a collectable I could use!
They are two different diameter pins, and one seems to fit .32-40, while the other is .38-55 caliber cases. I tried them both, and they will quickly deprime cases for cleaning! A Google search brought up a new Frankford Arsenal tool, that appears to be a slightly modified version. I'm sure it's not the same company, as these two tools are dated to WWI era. I guess a great idea is destined to be copied.