Ovationbloke

Hey, I have the chance of getting a GoldTop from the well known auction internet company lol, but the owner doesn't know the year of it etc but upon checking the serial number, its stated as either a 2005 or a '76 model. So how can a serial number be classed as 2 different years ? The number is 00065309 and there is quite a lot of cracking of the finish down by the controls. So if anyone knows why i'd be really appreciated! I do love Goldies ! Thank you, Keith