Yes, it's quite common, especially with hollow end links. The only downside is not knowing what the true serial is; typically when an RSC discovers this, they engrave the serial onto the case back before (a part of it) is completely rubbed away.
Pretty common to see such wear marks on those 14060. I have seen the wear marks in the same location on either the 6 or the 12 side off the case. But I have also seen plenty with very few marks. Either they changed the end link design in a certain year or in 2012 when it became the 14060M the case became no holes, so perhaps that changed the amount of wear marks?
Reviving an old thread I just came across. I thought I would also make my contribution for watch enthusiasts researching this topic in the future.
My 15210 showing the same signs. you can just about make out the ‘2’ in 15210. As for the serial number, I can’t figure out what the mysterious number could be.
Hollow link 78350 bracelet, endlinks 557 B. The crimped link at the end is what causes this, as photographed.