About to Purchase First GMT and have questions...

[klamathpro]

Hi all, new to the community. I'm about to purchase my first Rolex and I have chosen a used V series GMT. I found one at a local certified dealer with paperwork and box for $6750 + tax. My problem is I used his loupe and compared the used V with a new random serial number GMT and the datewheel on the new one has roman numeral 1's and a flared 2 like I see in most Pics and on Rolex's website. But the used one does not have roman numeral 1's and only a subtle flare on the 2. Additionally, the green roman numeral GMT MASTER II has less of a flare on the I's. The logo and everything else on the dial are spot on and I have no doubt that the case and strap are genuine, but it worries me that the date wheel numbers are slightly off. It's an earlier serial, possibly 2008, but sold in 2010 by the same dealer. He said the previous owner upgraded and originally bought it from them.

Did early V's have a different date wheel? They won't crack open the case because they said it needs to be properly resealed and said they have to charge $90 to get the Caliber verified as legit. Should I go ahead and get this done? Anything else I should ask or look out for?

Thanks Guys.