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Maarten · 14th Feb 2020, 3:47 pm

The date code is usually the last part of the second line in the white stamp on the bell of the tube, so that would indeed be a way to tell if it's a later one though I'm not sure from which year on they were more reliable. I'm guessing some time around 1984 if this coincides with the K40 chassis. In that case it's easy: By that time they were already stamping two digit years, so 84 for 1984, etc.

The revision is also in the same stamped code, but same problem: I don't know which revision is best.

There might also be unknown differences between factories.

14th Feb 2020, 3:47 pm	#15
Maarten Dekatron Join Date: Dec 2007 Location: Haarlem, Netherlands Posts: 4,199	Re: Philips 22CS1002/05t TV The date code is usually the last part of the second line in the white stamp on the bell of the tube, so that would indeed be a way to tell if it's a later one though I'm not sure from which year on they were more reliable. I'm guessing some time around 1984 if this coincides with the K40 chassis. In that case it's easy: By that time they were already stamping two digit years, so 84 for 1984, etc. The revision is also in the same stamped code, but same problem: I don't know which revision is best. There might also be unknown differences between factories.