Dating for beginners new era
"T" serials replaced "P" serials sometime mid-year 1950.
Therefore, I would prefer that the charts remain completely accessible for editing when necessary.EXCEPTION: This system is NOT to be confused with the seat-tube system which replaced it in 1970; which ran until 1973.Numbers At present, I have insufficent information about the serial numbers from this era to construct a definite chart of every example used during this time period. I have uncovered two of them to a reasonable extent; both of which ran concurrently to each other during this time period: The first system consists of 7 digits, beginning with 1000000.This convention might have been used in 1947 as well, however, we have not found any Raleigh examples from 1947 so far that exhibit this serial system.This convention remains still largely unidentified, though it appears to follow an identical format to convention #2; e.g., "12345RA." However, the first letter in the serial, "R," appears to remain for the entire run of this system.By 1961/62, an additional-single letter suffix was added, presumably as an identifier of the factory the frame was produced, for every single example I've seen is represented by the letter "N," which is not unreasonable to assume stands for Nottingham.
Neither it is not out of the question that other letters may exist, representing Raleigh's other factories.
Keep in mind that these charts are incomplete, and there is a reasonably wide margin of error between serial cutoff dates.
There isn't enough data to claim either option as absolute.
One may assume that "RA" serial numbers began with "RA00001" (or RA1000), and continue until "RA 99999 N," at which point the system was reset to "RB 00001 N" (or RB 10000 N).
This seems to have happened around 1962, and it is reasonable to assume that all "RB" symbols represent bikes produced post-1961.
Some serial systems from one era may resemble that of an earlier or later era.