It's really hard to tell for certain from this photo, but at first glance all these appear to be large dates. Clear, cropped photos of individual coins from directly overhead will help determine for sure.
That is usually the case. Very few of these are out there. I think I've seen less that 5 different die examples out there. (The way I can tell they are from different dies, is because of the mint mark locations) Being hand punched, they don't fall on the same exact spot too many times.