Dude..... those bottles are in good shape. Look at some of me junker old bottles I have kept in my photo album. Mine are all old, scratched up. Found in the ground or under piles of wood or in parts of buildings still standing. Yours are in good shape. Don't even think about using them for target practice. Congrats on the find.........
Went back to the dump site today, and found some more.
Milk bottle says sealed 1/11/14 on it, but on the bottom it has 42 on it.
I thought that blue bottle with the texture on it was a Milk of Magnesia, but I guess I was wrong.