I have a top case mounting bracket for a Vectrix VX-1 that I'm giving away if anyone is interested. I took this off of my 2007 Vectrix which I recently gave away. The back plate is dark green. I've attached a picture of the bracket and all the associated hardware.
All I ask is that you pay for actual shipping costs (via PayPal). If you are in the California Bay Area, you could come pick it up.