Authentication & Grading · 1 article

Authentication & Grading

A shipwreck coin with a broken COA chain is worth a fraction of one with clean provenance — reviewers and veteran collectors consistently flag this as the single most expensive lesson in the hobby. Here you'll learn to read slab certifications, spot red flags in counterfeit cobs, and understand what 'galano' (an unusually well-struck cob) actually means for market price.