Good luck!
I think it is 60k or 5 years - put another way, if it hasn't been done - it'll need doing PDQ!
If it has agenuine FVWSH - you can call any VW service dept and they can see the cars records on the computer from the reg number
good luck
btw - bear in mind the Glass's is a mid price - and at this age, a good one will command a premium at auction, maybe as much as £2300