I was at a yard sale at my neighbors and he had 24 solid brass 12 GA. empties. I am not a shotgun person. I am curios as to whether they have any collectors value as I could still pick them up as he did not sell them. There are 24 pieces no box. Any ideas as to what they might be worth. They are marked REM UMC. He said they are from the WW II period. Thanks for any help.