We talked about this a while ago but I've just noticed that with one of mine, it has 1A part numbers (post '27?) which dates it later perhaps than the 23xxx number stamped in the middle top of the beam. I had presumed it to be chassis number but it could perhaps be stamped as a replacement going to a particular car at the factory.
What beam stamps do people know of and what part numbers are present - can we establish a better pattern?
COULD PEOPLE WITH 3 SPEED BOX TOPS RECORD THE BOX TOP NUMBER AND THE SHIFT PATTERN; IF YOU HAVE A POSSIBLY ORIGINAL GEARBOX, THEN ALSO CHECK PARAZINE'S HYPOTHESIS AGAINST YOUR CHASSIS NUMBER
What beam stamps do people know of and what part numbers are present - can we establish a better pattern?
COULD PEOPLE WITH 3 SPEED BOX TOPS RECORD THE BOX TOP NUMBER AND THE SHIFT PATTERN; IF YOU HAVE A POSSIBLY ORIGINAL GEARBOX, THEN ALSO CHECK PARAZINE'S HYPOTHESIS AGAINST YOUR CHASSIS NUMBER