As much as I prefer SGC, I'd also leave them the way they are. The grades aren't questionable, and the slabs will assure less experienced buyers they're real. So I don't really see much benefit to paying to swap slabs.
Now, if I was keeping them, I might since I do have a set on SGCs registry. But then, I have a couple in PSA slabs and haven't had them redone yet....It's just not that big a thing to me.
Steve B
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