WTB Early 12 Military Shotgun Shells


   I just recently saw a picture of an early Peters Military or Gov  12 Ga. brass indented shot shell and a Winchester 12 Ga 00 B shell.  They were Circa WW1 and were used for Military and Prison Guard use.  The Win had fingers on its brass shell to better hold the wad in place.  This was claimed to help hold the wad in place during multiple loading and unloadings as was the Peters indented shell.  The Winchester wad had the 00 B printed on it and the Head stamp said Winchester No 12.  I wonder if any are available and  how expensive they may be.  Thanks,   Joe