Shield Rewards

[FluidShot]

Just a nooby question.

I haven't played PL in a while. A long while - around two years.

I logged on randomly, and in my stash I had the Frozen Crown of Gratitude, Shield of Gratitude, Two sets of Veteran's gear, Pocket Legends Shield, 2 year shield, and the 3 year shield.

I think I recall the gratitudes were given out for people who almost got the founders helm, but don't really know.
I'm not sure why I have two sets of the veterans gear.
I think the 2 and 3 year shields are from just creating my account in 2010.
But the Pocket Legends Shield? No idea where that came from.

If anyone has insight into any of these items (or links to a thread with the answers), it would be greatly appreciated.

Thanks in advance.