Osram GEC (UK) Lamp Date Calculator
This is for GEC lamps that have a 2 digit date code, this calculator gives up to 4 possible options of what that date might be, depending on which decade the lamp was made in- you'll have to decide which one applies most closely to the lamp in question. All this does, is remove the need for you to do the maths of which month code is which date.
This calculator will work for 4 of the 96 month cycles known to apply to this date code, starting at Jan 1934, up to 1958 when a 2 letter code was adopted (see other calculator for this).
This was made possible following posts to Streetlighting UK by Colin Grimes, May 2009.
This calculator will work for 4 of the 96 month cycles known to apply to this date code, starting at Jan 1934, up to 1958 when a 2 letter code was adopted (see other calculator for this).
This was made possible following posts to Streetlighting UK by Colin Grimes, May 2009.
James Hooker made the following comments about this sequence:
"This code actually started in 1894."