If it was me, I wouldn't grade the card. I don't see it being any better than maybe g-vg because of the crease. The number on the back doesn't bother me at all, I'd leave it mostly out of laziness.
I've shown this one recently, but it's really appropriate here. When I asked SGC at a show about the grade, they pointed out the erased number on the back, which kept it from being a bit better than a 40. I've had it since maybe 1980, and never noticed it till they pointed it out.
