That's great info. Thx. I'm sure these questions are basic so please accept my apologies as I learn.
I see the last sale on HA was rated through SGC. Are those the main two companies? It shows an 88, NM/MT 8. Is that the same rating scale as the 6 different certificates shown for PSA 8? Are there are rating agencies out there that might help determine the total population of cards available?
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