I look forward to many interesting discussions on this forum, thank you for making the guidelines available and easy to find again.
mdshrunk: "Could also be as simple as the "standard" sticker from the water heater manufacturing line got inadvertently applied to this little wee water heater."
This is what I was thinking...
Kgh60, Did you ever get your answer? I would be happy to offer any information I can if you provide a little bit more detail with the question!
I do not have any vintage pictures of my own to share but I thoroughly enjoyed this set of old pictures.