How can you identify a comic that may have been part of a 'Blue Box Star Comics' shipment?

Identifying a 'Blue Box' comic can be tricky. Look for remnants of blue cardboard fibers on the spine or edges of the comic. Sometimes, a faint blue discoloration is visible. However, this isn't definitive. Provenance records, dealer expertise, and documentation from previous owners are the most reliable ways to confirm a 'Blue Box' origin. CGC and PGX may also note it if they have evidence.