date these Zenith brochures?

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Originally Posted by drh4683

The second brochure must be from 1963 because Zenith celebrated its 50th year in 1968 as I have literature that says "50 years of quality 1918-1968" and also 1978 brochures that say "60 years of quality 1918-1978". The second brochure here indicates "45 year quality tradition assures highest performance standards", thus 1918+45=1963. That means the chassis we are seeing in this brochure must be a 26KC20. The first brochure is from '62 as all of those models use Zeniths first ever color chassis, the 29JC20. This is prooved because if I look up any of those model numbers in the zenith chassis index, it indicates a 29JC20 chassis. Also, I have brochures that indicate that zenith began color TV research in 1946. 1946+16=1962.

I also agree with your date of 1963. I found an ad in LIFE Magazine dated September 27, 1963 with the statement "Zenith's New Super Gold Video Guard Tuner". The chassis drawing in the ad resembles the chassis in the second brochure.