David R asked this question in the Walking Dead post below...

P1 promo in NSU
P4 at the Philly show this month

There was the other promo with the wine bottle at San Diego

Where are P2 and P3 ?

According to a post by Cryptozoic elsewhere on Card Talk, the P2 promo is being sent to dealers who ordered boxes and the unnumbered San Diego promo is considered to be the P3

So there are only 4 promo's for this set then?

Yep, by the checklist on Cryptozoic there are four. Checklist

Thanks Juelle we just have to tell ourselves that unnumbered = P3

Looks like the P2 is now available, here's a pic that I found.