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In Reply to: RE: Do All Phillips Ecc83 Have Etched Codes? posted by gradEHoser on October 28, 2016 at 13:27:32
Hard to tell exactly from your 1st photo though it seems to have an etched code behind the "83C" portion of the E83CC towards the bottom of the tube. Likely that is the code that indicates manufacture location and the specific tube type. If so look immediately above and below that line of code for the 2nd code that indicates manufacture date.
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Ya, I see what you mean but it looks like it's been blacked out and that E83cc placed over it. Strange.
Sometimes the etched codes are fuzzy. Also sometimes they are etched upside down. Possibly this one is upside down. Check it out with a magnifying glass while the tube is upright and upside down. Possibly the code will become readable.
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