Picked up some once fired 32-20 Winchester brass from a local auction today and sorting through it, I found this old duck...Berdan primed. Only one out of 113 pieces. I can't find any information on it as far as a year of manufacture...any one have an idea of the year ?
I believe that may be a VERY OLD case. If you do a little research you'll find Boxer cases were invented in Europe and Berdan in the U.S. and they became most common on the opposite continents.