I agree that it looks fishy and I wouldn't have bid on it, either. Aside from the obvious anomalies with the sale of the exact same coin, I wouldn't trust a non-top-tier TPG
with the grading of this coin anyway.
By the way, Kurt, even if it was in a PCGS
slab, I'd want to see both sides of the coin up close - especially since the market grading standards keep changing...