My Maxells from about 2 years ago are starting to go bad. They were burned by a Lite On 1693S and scanned fine at the time. The discs were stored in a spindle.
This is the worst one, with visible discoloration and spots. Most of the others were at least mostly readble.
The inner ring code starts with 0422BF, and the they are Made in Japan with a teal color top.
EDIT: attached scan of 2nd unreadable disc.