There is a small very old (ca 1880's) park near my house. I hunt it regularly and have found some nice items there. Currently there is a construction project going on right now at this park where they tore up some walking paths and scraped about 12 of dirt off of an area about 40' x 75'. The dirt is all piled up just waiting to be spread out again. I hunted the walking path trench and found a 1937 Buffalo nickel. I hunted the area where they scraped down 12 and found these shells. Please help me ID their approx age, thank you!