Actual history of Rolex warranty

[Marcoroc]

Hello everyone,

I am a new rolex collector and I am trying to understand some basic concepts.

From what I understood the warranty normally guarantees a price premium to the watch of 20 to 30%.

But there are many fake out except the punched warranty that are the only reliable on the market.

When did punched warranty begin year? Million?

Before that I have seen typed warranty are those reliable ?

Thanks for the info

Marco