Is this real Mantle RC?

[jchcollins]

Originally Posted by swarmee

SGC slabs are easy to "crack" with a butter knife. If the slab is sturdy and doesn't show signs of being glued back together, you should be fine.

Virtually all SGC slabs, both new and very old show some type of internal "debris", from where the slab halves were pressed together. The key is whether or not the fingernail test actually compromises the seal, not just whether or not it looks like it was glued. I have many SGC slabs which through edges with frosting, internal marks, etc. - might be interpreted to have glue in them somewhere, depending on who saw what. I am confident they are all good. I will agree they can be opened fairly easily, and think that both that and the appearance of the edges / production process might be something SGC could work on - especially in consideration of the fact that the face of their slabs generally present so well.

Will agree that card looks authentic / untampered with to me.