This forum is almost 15 years old. There are almost no 3-letter acronyms still available for an enterprising grading company that we haven't seen before.
does ISA suck? (from 2010... yeah, they did then and they do now)
BRGS, the grading company with an acronym that led to 'Hee Haw' jokes
CSA is not KSA, or is it? Are Canadians involved?
Wait, it's KSA! They're the Canadians!
AAA grading. From Hawaiian book-destroying criminal Roy Huff.
I think "XYZ", "PDQ" and "WTF" are still unused. Probably better that you start an auction house.
Bill