So I bought one on eBay and now I'm second guessing myself because the seller seems to have a suspiciously large supply.  If you search for completed items, you will see they have apparently sold over 30 copies, going back to October of last year.  It just seems weird that someone would have 30 copies to sell.  Not sure how hard it would be to counterfeit a magazine though.  The sell has been registered on eBay since 2003 and has other books/ magazines for sale and a 100 percent positive feedback rating.

I did message the seller after I purchased and asked how they came to own so many copies and the response was they aquired them when the magazine was first launched and are selling them due to financial issues.

Any way to know if my copy is legit?

https://www.ebay.com/itm/XMAS-SALE-fast-ship-Bitcoin-Magazine-1st-Issue-Brand-New-UNOPENED-casascius-BTC/184588520293?hash=item2afa554b65:g:MBwAAOSwQLZdtG1e