#1

Much of the following information is from "RecalledComics.com":

This variant seems to have been used as a retailer incentive edition in two separate instances:

Firstly, for MRRC (Marvel Retailer Resource Center) member shops that hosted an Astonishing X-Men #51 event celebrating the marriage of Northstar (Jean-Paul Beaubier) and Kyle Jinadu; where the first 10 retailers signing up and emailing pictures of the event would receive one (1) copy.

The second instance was through Diamond Comic Distributors as an incentive to "Order 5,000 copies of Ultimate Comics Fallout #4 or Ultimate Comics Fallout #4 Second Printing Bagley Variant, or any combination of the two." In this instance, the print run of the comic was actually stated as 20 copies. Whether this means that only 10 copies were available for each offer or that there are 30 copies in total is unknown.

In addition to the incentive offers above, there is also anecdotal evidence (allegedly from a Marvel source) stating that "far in excess of 10 copies" were created and there was in fact a box of them that were given out at various conventions.

Special Thanks to VC's Chris Eliopoulos and Joe Sabino.