Mike,
When I initially saw your post, my memory banks went to work; I was sure I'd seen WEAVER nameplates like that before, and on a silver Eureka Concours.
Sure enough... This appears to be a 1987 Concours landaulet bearing WEAVER exterior nameplates.
I'm sorry it has taken me so long to dig these out of my archives. I'll keep looking for the 3/4 front view.
Hope this might have some significance for the research you are doing on coaches owned by your firm, if this is indeed the same WEAVER.
I'm pretty sure I got this photo from my friend and fellow professional car photographer, Kent Roduck, many years ago.