I posted about this in another forum.
I'll just C&P...
First picture, first and third cartridges appear to be 7.5x55 Swiss rounds (they could also easily be 7.62x51). The plastic rounds were short-range training/gallery rounds. Essentially the neck would snap at the bullet portion of the case.
The middle round I believe is a 7.62x51 NATO round. It appears to be pelletized propellant. I know a number of nations in Europe experimented with pelletized ammunition that could be loaded in the case earlier in the forming process and more easily than loose powder. The filler is interesting, though. I need to do some reading in my Jean Huon book. (edit in: still need to do that).
Second picture first cartridge sure looks like a .455 Webley to me.
And yeah, most of those are modern cartridges.
(edit in)
Most of the other cartridges seem to be various flavors of 9mm.
You can tell, though, that a lot of them are European in origen because of the Berdan priming.
Someone identified the last one (with the red plastic case) as a Speer plastic training round. I'm not 100% sure that it is, but it is the same concept. I believe that that is a rubber bullet, though, not a plastic bullet of the type that Speer offered.
The three weird rifle cartridges in the next to last set appear to be a 7.62x51, and I don't know about the other two. The last one is weird, because it has the multi-ball round, so it has a VERY long neck.
The one in the middle looks like a 5.56x45 flechette round, but it's difficult because the cartridges in each group don't appear to be realistically scaled to each other.
The set above that appears to be a Glaser .38 Special or .357 Magnum, and the bottlenecked round someone identified as a British development, the .224 Boz.
It would have been nice had the photographer added some information about the cartridges.