Very funny, but I don’t believe its genuine, a quick google shows that WD40 was made available to the public in San Diego 1958. Sorry!
I’ve been using it for years as a deodorant, never on my tools though, it stings.
That doesnt mean this wasnt an ad in 1964
It does mean the text with the image is incorrect.
Still very funny though
They sell one on ebay for £13 i will have to buy one for the garage