So, what did YOU date this as??
Looks like late 1960 early 1970
Maybe it was atWoodstock
I wrote “disco era”.
Once a water heater gets to a certain age, it’s kinda pointless to get picky about ± a decade or so.
Sort of like almost nobody puts 50 candles on a birthday cake except as a joke.
AMERICAN APPLIANCE MFG. CORP.
2341 MICHIGAN AVENUE
SANTA MONICA, CA 90404
EQUIPPED FOR USE WITH NAT GAS
MODEL NUMBER GVF333T
SERIAL NUMBER A2363113
ANSI Z21.10.lb-'79
PLANT-A
BS.
Next time you want someone to give you the correct info, try just asking instead of playing games.
The exact date does not matter in the context of my report. I did indeed write “disco era”. The ANSI stamp on label implies post 1979, but the serial number could be interpreted as the 23rd week of 1963 unit #113. I shared the photo in the spirt of lighthearted amusement, not to burden anyone.
I would guess mid to late 70s based on the vibe 
My record is 1984 for a confirmed date. I look forward to seeing a groovy sticker
Based upon the BLOCK like letter “E” and the tails of the “G & Y” … I would place it as manufactured between 1978 and 1980. Then seeing the almost closed “C” it would likely have been produced on the early morning shift … between 7am and 8am.
I would have said the “Laverne and Shirley” era, just so I did not box myself in 
1976-1983
Disco is not dead yet 
It was never alive for me… 