A friend gave these to me today, is there anything special to look for or are these all basically worthless (there are so many to look through and i dont want to waste my time if they are)? Most have the strike pads on the back but there are some front strikes. Most are from the east coast, NY/NJ/PA but there are some from other places around the country/world.

None of these are from casinos, at least that I know of, there may be some from illegal places that dont say the word casino on them.