How To Tell If The Mailer Box Is The Correct One For Your Figure

[supercrazy]

I bought a mint penguin in plastic bag and mailer box and was just wondering if it is the correct mailer box.
The label on the box reads
M51300/4
Hopefully someone knows and can answer this question. I have put a pic of him. Just click on the cam. Any help will be appreciated.

[WannabeMego]

Try this:

http://twomorrows.com/index.php?main_page=product_info&cPath=95_96&products_id=566

Benjamin may have it in his book...