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British car folklore has it that there is a date code indicated by the position of the dots around the outside of the circular TripleX logo on car glass. I'm looking for an explanation of how to decipher the code.
In this first example from a Healey with a build date of February 1955, note the dot above the X at the end of the word TripleX. That supposedly indicates a date (maybe a particular month?). I suppose that the "55" in the line reading L55V may indicate the year of manufacture, or perhaps something else. Note also the dots above the two letters "E" in the line reading AGREE; I wonder what, if any, is their significance?
In this second example from a windscreen from a 1964 Phase I BJ8, note the dot above the letter "T" in TripleX and the one below the letter "A" in laminated.
There may be additional coded information in the alphanumeric etching, and I would be interested in how to decipher that as well.
Thank you to Roger Moment for these photographs, posted here with his permission.
British car folklore has it that there is a date code indicated by the position of the dots around the outside of the circular TripleX logo on car glass. I'm looking for an explanation of how to decipher the code.
In this first example from a Healey with a build date of February 1955, note the dot above the X at the end of the word TripleX. That supposedly indicates a date (maybe a particular month?). I suppose that the "55" in the line reading L55V may indicate the year of manufacture, or perhaps something else. Note also the dots above the two letters "E" in the line reading AGREE; I wonder what, if any, is their significance?
In this second example from a windscreen from a 1964 Phase I BJ8, note the dot above the letter "T" in TripleX and the one below the letter "A" in laminated.
There may be additional coded information in the alphanumeric etching, and I would be interested in how to decipher that as well.
Thank you to Roger Moment for these photographs, posted here with his permission.