id like to educate myself a little

i would like to start researching info on the different NGC generations in slabs...

i am quite fascinated with the black slabs especially.

note to self: maybe try to keep my eyes open for exhisting black slabs...possible purchase?

Do the cert numbers run sequentially in order of coins graded throughout history?

possible book exhist? articles?

is there anyone out there who is educated in this that would like to teach? im always here!

thanks

nick

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