the seller is a moderator on that forum, i think he should stick to ar-15s. either that or it looks like another scam. label is obviously faked and it might be the wrong era box too. it's hard to tell from that side pic.
I've been a member of AR-15.com since 2002. I won't contact the seller either. If I was thinking of buying it, maybe. I don't need the aggravation if the guy cops an attitude.
Other than the box it's a nice gun. I'd really like to have a 1952 Commander.