Hi Paul,
Believe you maybe inquiring of the NOVA DVR3000, rather than the GVR3000. The DVR 3000 was released in 2001 and has since been discontinued for well over 10 years. Unfortunately the serial location on those models is unknown. However, please check the decal just beneath the tailstock.
Regards,
NOVA Teknatool
Paul Giddins
could you please tell me where the serial no. is on my GVR3000 lathe please