My favorite thing about Fountain (besides the fact it has been pissing off fascists for over a century, natch) is that the original was lost and he made a bunch of official editions to sell to various museums (after the original was lost, possibly on purpose).
And they’re different! If it was a real “readymade” he could have just bought some more at his local hardware store, but no. He changed them in OBVIOUS WAYS.
See the triangle of holes?
Here’s the one from the Tate Modern:
Oh hello, cross-holes. Fancy seeing you here.
SFMOMA’s edition has the triangle holes, but it also has a line of holes at the top that are completely different from either other version.
Here’s one from Moderna Museet. Line and a circular set of holes!
Duchamp definitely intentionally made these different on purpose. It’s a “readymade” but it’s not, really, each of these is a specific custom creation.
It’s not even clear if he made it! He wrote a letter to his sister claiming that a female friend sent it to him, and he just enrolled it in the art exhibit under his own name. There’s also a possibility that that female friend was himself, since he later had a female pseudonym of Rrose Sélav.
This whole piece of art is a fractal troll, and it’s a beautiful one.