Well, my old Coulter Optics 10" (company doesn't exist any more) is still in excellent shape (apart from that bruise)... I bought it back in 1981 (30 year ago) and the original coating is still there. I washed it maybe 4-5 times since.
I was thinking about re-aluminizing and re-coating after the accident, but decided not to do it - no real benefit there (apart from that warm feeling..).. Reason versus Psychology in action
