Old Watch with Open Warranty Card: Any benefits?

[onlysteel]

hi folks,

I recently bought this LV from a private party that came with an open warranty card. THe name of the dealer is there and the rest is all blank. So if I put my name on the card, what does that entitle me to?

I was under the impression that the moment I put the name and date on the card, I am entitled to a 3yr warranty? IS that correct?

Can't the dealer check that they never sold me the watch? Won't they question how my name got there?

Thank you