Dealers use permanent markers to touch up numbers on 16570?

[tifosi521]

Upon visiting a reputable dealer selling pre-owned Rolex watches, I was informed that a permanent marker can be used to touch up the numbers on the 16570.

Many of the vintage examples I've seen for sale have been restored with a polish and have bezels with perfect numbers. I assume they must have been touched up.

Do you think that pre-owned dealers are using a permanent marker to touch up the numbers?

I'd hate to buy one with touched-up numbers only to have them wear away in the rain or if I get soap and water on the bezel.

-Ray