According to JS Wrights
"A Grade 1 Blade"
"A Grade 1 is the best looking blade money can buy, though it will not necessarily play the best. There may be some red wood evident on the edge of the bat. The grain on the face will be straight and there will be at least 5 grains visible. There may be the odd small knot in the edge or back but the playing area should be clean."
As we know grading is subjective, most are gonna say we judge on performance, you would be mad not to, but which is right? Does grading matter? Well for some of us it does. I'm not keen on heartwood, the gn legend that passed through my hands had it. Didn't appeal to me. This is Gn's 1% top willow. Total nonsense, greed from a big big company.
There are a few company's that grade the same as Wrights, and I think they follow there guidelines. CA, SS etc... And even MSR follow and there top bats are truly stunning, as I believe they follow wrights guide.
End of the day 95% of all bats, graded 1 to god knows how many when pressed and played in will be of equal performance. The other 5% is what us plonkers are searching for.