Yah I'll take it to Heritage or one of the other big guys next time they are in town to get their opinion, just for more piece of mind, but I really have zero doubts. And believe me years ago I paid a pretty penny for what turned out to be a fake Gehrig card. I knew it was fake when it arrived and trashed it, as I purchased off Ebay and had no recourse.
So yep if this looked fake at all it would eat at me, but I will sleep well tonight too many indicators showing the possession arrow going my way.
Here are a few I found through researching auction houses:
http://sports.ha.com/c/item.zx?saleNo=704&lotNo=19652
http://sports.ha.com/c/item.zx?saleNo=7041&lotNo=81298
http://sports.ha.com/c/item.zx?saleNo=710&lotNo=19865