your Grandma did a wonderful thing for you she is gone but whether the sig is real or not does not matter in the context of her gift
the money is gone there is no way to get it back so what difference does it make if it is real at this point
it looks close enough even if it's not real you're not going to resell so it might as well be real...
This is a very, very good point--I'm not going to sell it, you're right about that. I just wanted it to be real for my children (and potential grandchildren)...but I do have a genuine copy signed copy of SB now, at least. Beautifully stated though--thank you