Steiner's Roman Surface

A realization of the projective plane discovered by Jacob Steiner in 1844. Guess where he was at the time:) He couldn't work out the formula, so he had to pester his buddy Karl Weierstrass to dig up the following:

Polynomial:

      x^2*y^2+y^2*z^2+x^2*z^2+x*y*z=0 

Here is the PoV3-source I used

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