Vintage Rolex Buyer's Guidance to determine the originality of your watch..

[Rahir]

I literately cannot wait to buy a Vintage Pepsi GMT but I never thought it was going to be so complicated I'd love to buy one but I'm not an expert in watches let alone vintages... Thing is that I'd be scared to buy a vintage on the internet then once I have it find out is not vintage, it's a fake or it's had modifications.

any help? I would appreciate it :)