Paul,
My 12"LB is just over 3 years old, and while it still gives killer views the coating has degraded quicker than I had hoped.
This appears to be a manufacturing fault: maybe not enough material used or applied incorrectly.
I'm saving up my pennies ($300) to have Chi Qin , here in Sydney re coat the mirror.
They are a premium dealer with a reputation for very good work.
John.
