Don,
I rode a Viscount aerospace pro back in the 70's. I really liked it.
Here's ther story.
Originally they were Lambert cycles. British bike with unusual componentry,
much of it made by Lambert or branded as lambert.
At some point in time they were bought by Yamaha who rebranded them Viscount.
The original "death fork" was an cast aluminium sloping crown fork, that reportedly
failed (I commuted on mine and had no problems). There are pics of the fork on
Classic Rendezvous, and when taken apart they were dicey at best. Yamaha recalled
all the forks and sent replacement chromed steel forks (Tange? not sure).
They came with an assortment of componentry, based on the model
I believe most Derailleurs were Suntour VGT, and VGT Lux (on the ones I've seen).
Mine came with Cyclone but that was an upgrade done by LBS.
Yes they are somewhat collectable, especially if you still have the original
Lambert parts.
As stated at CR site on Lambert/Viscount:
Originally Posted by Classic Rendezvous
What are they worth? To be seen as "collectable", people need to know about a maker, and care about it....That puts the Lambert in trouble. Maybe someday they will be discovered, but right now you would have trouble finding an informed buyer at all.
Marty