Avocet was, to the mid-70s to early 80s, what Velo-Orange is today.
They were aiming to become a brand name. They sourced components from various manufacturers, Ofmega being an important one. The saddles were, mostly, Italian made and very nice. They courted the touring market. The triple crank set was very nice. Seat posts, sealed bearing hubs, etc.
Not exactly sure when they went under. Someone else can clarify.
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1959 Hilton Wrigley Connoisseur (my favorite!)
1963 Hetchins Mountain King
1971 Gitane Tour de France (original owner)
* 1971 Gitane Super Corsa (crashed)
* rebuilt as upright cruiser
1971 Gitane Super Corsa #2 (sweet replacement)
1980 Ritchey Road Touring (The Grail Bike)
1982 Tom Ritchey Everest
(replacing stolen 1981 TR Everest custom)
1982 Tom Ritchey McKinley (touring pickup truck)
1985 ALAN Record (Glued & Screwed. A gift.)