That's Thomas Funk. His grading system is very atypical but he was a fairly strict grader back in the day. His G- was many dealers VG, so it's always worth taking a chance , if the price is right.
His prices are crazy, but once in a while, something slips through. This isn't 'once in a while' though.
He hasn't been in good health for a long time and I think his son is running the eBay account, so I don't know how the grading is right now. Haven't bought from him in years.