Unknown history from a box of carbs I picked up I'm all Birmingham England

Real clean looking carburetor has 689/367 stamped on the top

Has original throttle cable and slide works good

Nice clean body for restoration or rebuild I know nothing about these but looks very nice

It does measure about inch and 5/32 seconds or 30 mm

And so honestly I just copied some information for the description just a generate some interest please take a good look at what I have and whether it's what you want good looking carb though

Here's what I learned on the inner-nit

Amal 689 carburetors were commonly used on Norton Atlas motorcycles, specifically the 1966 model. They were also found on some BSA models and other high-performance bikes. The Amal 689 is a type of Monobloc carburetor, known for its use in performance applications.

Here's a more detailed breakdown:

Norton Atlas:

The 1966 Norton Atlas was a key model that utilized twin 689 Monoblocs.

Other Norton Models:

While the 1966 Atlas is the most frequently cited, other Norton models may have also used this carburetor configuration.

BSA:

BSA also employed the 689 Monobloc on some of their models, including high-performance variants.

Competition Bikes:

Less common versions like GP and TT Amal carburetors were designed for racing and were found on bikes like the BSA Gold Star, BSA Spitfire, and Velocette Thruxton.

Monobloc Carburetors:

The 689 is part of the Monobloc series, a type of carburetor known for its performance capabilities.