1953 - Space Jet Water Pistol by Knickerbocker Plastic Company

[Joe K.]

As seen in this ad from the April 1953 issue of Popular Mechanics:

ANZinSpace originally spotted this back in 2006:

I wonder how many more potential Timeline sightings are lurking here:

https://books.google.com/books/serial/ISSN:00324558?rview=1

[Fineas J. Whoopie]

Interesting that the period description says "styled for the space ship era". There was a listing for some space themed removable tattoos on ebay a while ago that called themselves "Atomic Era Tattoos". At the time I was doubtful that they would use that term back in the 1950's. It just seems like a reference that would be made in retrospect. Now that I see this add I think maybe it is possible.