Seeley Weslake 500 info needed please!!!!

Hi, recently i bought an old Seely Weslake 500 dated 1973 twin, would love to know a little bit about this bike as i cant seem to find anything on it, it would be extremely helpful and allow me to put a price tag on it when ive cleaned it up, cheers!

Hi, the Seeley Weslake 500 is a classic racer from the 60's and 70's, a lot of which are still being campaigned today. The frame's were built by Colin Seeley and the engines came from Weslake Engineering services who specialised in race and speedway engines. You can still get spares for most Weslake engines from Weslake Heritage: [You must be registered and logged in to see this link.]

Pricing, not sure, have a look at E-bay, there are a couple of Classic Bike mags for sale issue 109 from 1989 which has a road test of the 500.