The 2 years is an arbitrary number for a general idea. The idea is fine, but you don't have to take the specific number as gospel. To me, 2 is an okay enough number, but 1 and 3 would be fine choices too.
Also, the type I, type II etc is a practical guide assembled for grading and labeling. It's an okay guide, but shouldn't be taken as the ultimate definer especially when you get past Type I. It has distinct limitations, as most people who study it figure out, and probably even the makers would acknowledge.
Personally, I don't use the PSA guide or terminology. I'm the photos adviser for Beckett-- which doesn't mean I physically examine anything, but give outside advice usually concerning problematic photos--, and whenever Beckett's director of grading says Type II or Type III I have to go to the PSA/DNA page and re-remember what that means. By the next day, I've forgotten again.
Last edited by drc; 02-10-2010 at 02:08 PM.
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