Title comps
Realized prices for the same title, issue and grade across houses — different physical copies. For one specific slab, use cert provenance.
Same book, same gradechallengers of the unknown 1958-78 #1 · grade 5.5Same title, issue and grade across sources — different physical copies. Not the same slab. For one specific slab's history use cert provenance.
single sale1 sale (universal label, last 10 yrs)last sale $566.00 — not a market estimateMay 2, 2017 → May 2, 2017ComicConnect · CGC
May 2, 2017ComicConnectCHALLENGERS OF THE UNKNOWN 1958-78 #1CGC 5.5$566.00