Yes, these look like Mughal-era copper dams. Specific attributions of these coins are difficult, but possible. One way would be to look through a list of AE dams on Zeno for a match.
http://search.zeno.ru/index.php?v=0&ae=on&c=India&t=&d=&wmin=&wmax=&smin=&smax=&m=&ymin=&ymax=&y=&u=&a=AE+dam&s=0
Most likely some are from Akbar or Aurangzeb, since these were prolific issuers of copper dams. The ones with double lines across could be from the Maratha Confederacy.
