it is a metal plate. In the January 2017 issue of the Victoria Association Bustle there is an ad for free for the shipping. Contact Tom Philips (TX) at 512-585-4069.
Tom Endy
Thank You Tom, Mike, and Jason! This is all extremely helpful as I am now aware that I am also missing the clip that retains the rear seat at the front of it! Now I have to find that guy.....
Seriously I am very appreciative of the photos, drawings and your expertise.