Italian component manufacture date

[p400]

I am trying to verify the date of manufacture on many Italian electrical components of the late 60's thru late 70's and i need help, please, ......
(1) Magneti Marelli distributors, coils, resistors
(2) Fiamm horn compressors, trumpets
(3) Jaeger (French) components
(4) Carello?
(5) Altissimo?
(6) Falcos?

the manufacure date codes on these components tend to be an single alpha character followed by a single numeric like - 6F or 7T

i am most interested in finding a link to a website where this date marking is discussed and/or verified thru the manufacture.
any help is great
thanks
Craig

[TorW]

Not sure if this is of any help, but my Magneti Marelli S127D distributor is marked "2N", and it's almost certainly made in 1972; Montreals from mid 1972 onwards are the only car that have this distributor, and mine is made in 1972.

I don't know if the "2" means 1972 or what the N is supposed to mean if it does. Novembre/November perhaps, unless the "7T" code you mentioned above is real. There are no month names beginning with T in Italian.

If we could get more Magneti Marelli samples, we could corroborate the car's production date with the MM date code.

Update: The S127D identification plate in the "Ignition distribution" section on alfamontreal.info carries the code "3E" (upside down, no less).

[p400]

Just thinking of Marelli -
Italian month names
MONTHS OF THE YEAR
G - gennaio January
F - febbraio February
M - marzo March
A - aprile April
M - maggio May
G - giugno June
L - luglio July
A - agosto August
S - settembre September
O - ottobre October
N - novembre November
D - dicembre December

2 G's, 2 A's, 2 M's

Every worker at Marelli has been shot, so as not to reveal the secret code?
Do we have any Marelli contacts?
You realize other countries (France) manufactured goods during this same time and also used this date code system - 2N, J6, 6F
I cannot find a T like 7T as i suggested,
any help is wonderful

tag shown is a 0 E (zero E) , which month is E?

[TorW]

The letter in the code does not mean month then, at least not as an abbreviation of the month name. If the codes really are date codes (are we sure they are?), they could just as easily mean year and a two week period. The 26 basic Latin letters will cover the year's 52 weeks nicely. A 9-year window is probably sufficient for year in these cases.

There are also the stamped symbols to consider: the pointed square shape on the 129C distributor above, and the circle on the S127D. Production plant maybe?

[p400]

Quote:

Originally Posted by TorW The letter in the code does not mean month then, at least not as an abbreviation of the month name. If the codes really are date codes (are we sure they are?), they could just as easily mean year and a two week period. The 26 basic Latin letters will cover the year's 52 weeks nicely. A 9-year window is probably sufficient for year in these cases. There are also the stamped symbols to consider: the pointed square shape on the 129C distributor above, and the circle on the S127D. Production plant maybe?