How to know fake or not rolex daytona 1992 model 78488

https://www.youtube.com/watch?v=RzQcj1ulIkQ

"Five hundred dollars for a '93 Rolex Daytona," he says, "I'll do it!" That same watch is valued at around $16,000-$19,000 now, depending on its condition.Jul 30, 2012 https://www.exquisitejewelersmiami.com/blogs/rolex-daytona-watches/6351872-the-rolex-daytona
Rolex Daytona Size and WeightDaytona watches are large and typically measure 40mm across. Weight for the Rolex Daytona varies based on the material used. For instance, it ranges from 148 grams for the stainless steel model, to 195 grams for the white gold, to 283 grams for a platinum Rolex Daytona.
https://northscottsdaleloan.com/watch-reviews/rolex-daytona/

go here > http://www.chronocentric.com/watches/counterfeit.shtml

It's not a Rolex Daytona. Definitely fake.

There is no Daytona with this model number, it's fake 100%

Take it to a Rolex dealer, if it is not a fake he won't smash it!

Take a look on amazon for real watch prices (Daytona): Amazon com Rolex Daytona . After that you can compare. I hope this was helpful. Cheers

Unfotunately for you- your Daytona is fake.