In coin grading, is Basal state the same as Poor?

PCGS has Poor as 01. Will a Basal state coin be 00? Is Basal state still used nowadays?

DPOTD-3
'Emancipate yourselves from mental slavery'
CU #3245 B.N.A. #428
Don
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Comments
poor: i can still tell year/mm
basal: i can only tell what type the coin is (draped bust lg. cent/ classic head/ etc.) -- cant tell date or other details
www.brunkauctions.com
<< <i>whether right or wrong, here is how i see the two:
poor: i can still tell year/mm
basal: i can only tell what type the coin is (draped bust lg. cent/ classic head/ etc.) -- cant tell date or other details >>
That is how I understand it as well.
-Paul
<< <i>basal: i can only tell what type the coin is (draped bust lg. cent/ classic head/ etc.) -- cant tell date or other details >>
What if the design is all gone, but it still has the weight/dimensions of, say, a large cent?
-01? AB (about basal)?
My Adolph A. Weinman signature

<< <i>According to the original Sheldon grading scale, which was purely mathematical, by definition the Basal State was P-01. All others were multiples of that, up to 70. >>
Absolutely correct. If a basal state coin was worth $8, then in theory a 45 would be appx $360, a 60 $480, etc.
DPOTD-3
'Emancipate yourselves from mental slavery'
CU #3245 B.N.A. #428
Don
BTW it is possible to determine the Sheldon number of a large cent even it does not have a readable date. I know because I have done it.