very old bottles

was out picking mushrooms when i found old cabin and dumpsite and it wasn't long before i fell through into privy.it was dry and full off bottles with many more scattered about the swamp.i know nothing about bottles and was throwing them out when a friend told me about your website.are they any good? what do i look for that's worth carrying back down the mountain,pontill mark? it seems the deeper i dig the older the bottles get.  thanks for your time    p.s. i have more pics of old bottles and could send invite link to any email address[link is from Picasa]

Good