Thank you Gr8uncleal, RogerDodger and Mervin. The ones with the V slash are very late model style. I recall Mr Crip (on here) changed his from the filled in 00s to the open 00s on his 1979 white/red RD200DX. I think that is where I am at, but will look at the brochures on Hot Topics as you suggest. I have been lucky to find a genuine Yam tank that has not been on a bike for over fourty years. Best wishes, Gavin