A 70 is a real grade, honestly earned, and on the right coin it means almost nothing at all. Here is how to tell the right coin from the wrong one.
On the Sheldon scale, a 70 means a coin with no post-production flaws visible at magnification: a genuine, verifiable statement by services like PCGS and NGC, whose work we respect and rely on. The grade is honest. The question a smart collector asks next is different: how many exist, and what did this coin survive?
Modern commemoratives and proofs travel from press to capsule untouched by human commerce. Struck with modern technology for the express purpose of being flawless, they achieve it routinely: the grading services’ own public population reports show tens of thousands of 70s for many modern issues, with more certified every month the mint keeps selling. A perfect grade shared by a warehouse of identical coins is a quality check, not a rarity.
Now flip to a coin that was money. A Morgan struck in 1884 had to dodge circulation wear, bag-to-bag abrasion in Treasury vaults, the Pittman melt, and 140 years of human hands. High-grade survivors are genuinely scarce, the census is fixed forever, and each point up the scale thins it further. That is why a classic coin’s grade carries weight a modern 70 simply cannot: one describes an escape, the other describes a factory.
Same holder, same font, two different meanings. Before paying any premium for a number, look up the population report (both services publish them free), ask how many exist in that grade and higher, and ask what the coin had to survive to get there. Certification tells you the coin is real and honestly graded. Population and history tell you what the grade is worth. You need both halves, and now you have them.