Rear Light assy. for Rocket 3

[A75stevie]

Hi, I'm looking for a rear light assembly, (complete if possible, but any bits will do) for a '69 Rocket 3. It's the Lucas 679 "tit" type with the triangular side reflectors. I can p/x for a later square type with cutouts for indicators.
This looks a great site, btw. Hope I can be of assistance in some way.
Steve.