I have bought a few nondescript 1902-O's for the fun of it (all PCGS uncirculated), so I could go home, pull out the guide and attribute them. Even I was able to attribute them using the guide.
If you are going to
VAM, you need to be able to attribute your own coins. Prior to the guide I only had one, a 1902-O
VAM 17-B with a 10 degree counter clockwise rotation. Now I have four 1902-O's. So I am like the Jefferson's--I am moving on up to that deluxe collection near the sky!