A lot of the information is incorrect. Some (not all) comments...
PCGS phone support is good, but their record with emails is reported to be abysmal.
ICG no longer has the intercept holders.
Grading is rarely described as accurate nor consistent.
They do provide more attributions than others and they have the 'educational' slab for counterfeit coins (they are the only one to slab them).
Both
NGC and
PCGS do (partly) grade problem coins - XF Details with a code or description of the problem (harshly cleaned).
NGCGrading is far more consistent than ICGs. Although none of the TPGs are perfect (people will argue with any of them)!
ANACSHolders are completely different. Since the time shown there have been several different owners, roughly the blue label (Anderson Press) and the Yellow (Driving Force LLC).
Quality of grading is subject to disagreements.
They are inexpensive and attribute more than NGC/PCGS so people use them for protection.
SEGSSome people do like the edge label on the holder.
The company has been reorganized since this page was written and does not stand behind older coins.
PCI Still uses the same holder, that's about the only thing true.
The three code green label slabs shown are thought of as reasonably accurately graded, especially with today's gradeflation. But that's about it. Past that...
After the green labels they went through several ownerships getting worse each time. Bankrupt and the assets were purchased by David Lawrence Rare Coins and relaunched as DGS (Dominion Grading Service) then closed shortly.
The assets were bought by Anthony Dellauniversita in the 2010-2011 timeframe. They reused the green label shown in the picture (however, the microprinted PCI of the reverse border on the good ones is a line of blobs on the bad ones). They fraudulently overgraded coins for their closely affiliated company to sell.
http://www.coinweek.com/pdf/Finding...of%20Law.pdfSince then, they have again relaunched but nobody really knows who is running the show - it's a PO Box on Long Island. They've graded around 11K coins since end of 2011/early 2012... the newest labels (still in the same Hallmark slab) have what looks like tracks and a bullet train as the border.
NTC ... less said the best.
-----Burton
50+ year / Life / Emeritus
ANA member (joined 12/1/1973)
Life member: Numismatics International, CONECA
Member: TNA, FtWCC, NETCC, EveryCountry (online) coin club
Owned by three cats and a wife of 40+ years (joined 1983)
Author: 3rd Edition of the Sample Slabs book,
https://www.sampleslabs.info/