Can anyone tell me where the old MacPython "16 ton" logo came from?

[Christian Heimes]

On 2018-07-15 14:05, Mark wrote:
> I'm curious to understand how come the original MacPython logo is of a 16 ton weight (rather than, say the word 'python' or a picture of a snake)?
> You can see the logo here: https://homepages.cwi.nl/~jack/macpython/

Most obscure references in Python are based on Monty Python sketches,
e.g. https://www.youtube.com/watch?v=o13glRURgTE