My RS was made in 1999. The frame number, stamped on the rivited plate to the right hand frame spar says MR01 9910037
The first two digits after MR01 tell you the year of manufacture, in my case 1999.
Your plate will have stamped MR02 then the first two number after that will tell you the year of manufacture.

P.S. Just sent you a mail about an NXA tank.