These are the scales I have seen in my 30+ years experience. And, it is still depends on the buyer/collector/seller's own opinion! This is a scale to use to put some kind of rating on the book. Put one book in a room with 5 people, you will get 4 or 5 different ratings.
If you were to use every number, meaning 10.0, 9.9, 9.8, 9.7, you would not be able to match the MINT and NM scale. When you add the +/- part, you get a much wider range in the number scale that matches,
But you must leave out the ODD number part of the scale. If you put them in, then you leave a large portion of the 0 -10 scale, so why not just use 0-5, or 5-10.
(0-10x2s)(WORDs)(5-10)(0-5)(5-10)
10.0 Mint 10 5.0 10.0 M=Mint
9.8 NM/M+ 9.9 4.9 9.9 VF=Very Fine
9.6 NM/M 9.8 4.8 9.8 F=Fine
9.4 NM/M- 9.7 4.7 9.7 VG=Very Good
9.2 NM+ 9.6 4.6 9.6 G=Good
9.0 NM 9.5 4.5 9.5 P=Poor
8.8 NM- 9.4 4.4 9.4 VP=Very Poor
8.6 VF/NM+ 9.3 4.3 9.3 B=Bad
8.4 VF/NM 9.2 4.2 9.2 T=Trash
8.2 VF/NM- 9.1 4.1 9.1
8.0 VF+ 9.0 4.0 9.0
7.8 VF 8.9 3.9 8.9
7.6 VF- 8.8 3.8 8.8
7.4 F/VF+ 8.7 3.7 8.7
7.2 F/VF 8.6 3.6 8.6
7.0 F/VF- 8.5 3.5 8.5
6.8 F+ 8.4 3.4 8.4
6.6 F 8.3 3.3 8.3
6.4 F- 8.2 3.2 8.2
6.2 VG/F+ 8.1 3.1 8.1
6.0 VG/F 8.0 3.0 8.0
5.8 VG/F- 7.9 2.9 7.9
5.6 VG+ 7.8 2.8 7.8
5.4 VG 7.7 2.7 7.7
5.2 VG- 7.6 2.6 7.6
5.0 G/VG+ 7.5 2.5 7.5
4.8 G/VG 7.4 2.4 7.4
4.6 G/VG- 7.3 2.3 7.3
4.4 G+ 7.2 2.2 7.2
4.2 G 7.1 2.1 7.1
4.0 G- 7.0 2.0 7.0
3.8 P/G+ 6.9 1.9 6.9
3.6 P/G 6.8 1.8 6.8
3.4 P/G- 6.7 1.7 6.7
3.2 P+ 6.6 1.6 6.6
3.0 P 6.5 1.5 6.5
2.8 P- 6.4 1.4 6.4
2.6 VP/P+ 6.3 1.3 6.3
2.4 VP/P 6.2 1.2 6.2
2.2 VP/P- 6.1 1.1 6.1
2.0 VP+ 6.0 1.0 6.0
1.8 VP 5.9 0.9 5.9
1.6 VP- 5.8 0.8 5.8
1.4 B/VP+ 5.7 0.7 5.7
1.2 B/VP 5.6 0.6 5.6
1.0 B/VP- 5.5 0.5 5.5
0.8 B+ 5.4 0.4 5.4
0.6 B 5.3 0.3 5.3
0.4 B- 5.2 0.2 5.2
0.2 TRASH 5.1 0.1 5.1
If you use a mixture of these, which is commonly occuring today, then you invite large quantities of different opinions!
I try to stay near the two scales on the left. They are fairest, and cover each other perfectly.
See, in the past few years, I have seen the addition of the +/- signs being used, which is a good thing, but you need to use them all across the grade scale, as I did above. You can't use them only in the top grades to satisfy your own greed/need. APPLES TO APPLES is the rule!
For my store, here is the best rating:
100% Satisfaction or your money back! No QUESTIONS ASKED! Just ship them back and get another or a FULL refund of your money (return shipping not refunded. Replacement shipping paid by me).SO, this is just my 2 cents worth, or was that 2.0 cents, or, um, .02 cents worth..oh NM (that's never mind, not near mint).
* All items must be returned prior to refund at your expense. Return shipping not refunded.