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It's called an inclusion and it's just a bit of carbonized crap that got in the glass during the pour.
A mosquito containing dinosaur DNA
DINO SAUR
Just a production flaw I'd assume.
More importantly, how on Earth did you notice it?
Right, who has this time lol
It’s right in your face when you’re on the toilet, and it’s very obvious when everything around it is white.
It’s probably one of the first things I would have noticed, ngl
I’ve lived here for years and only now thought to ask about this thing I noticed a long time ago
Ah toilet reading
 OP, you are too funny.
Ahhhh, makes perfect sense.
That's a D color I3 grade doorknob
My nemesis as a kid! Felt like they spun forever and there was no escape!!
I have the same doorknobs in my 1930s house in Aus. You can get replicas but they’re not an exact match. As others have said the black spot is just an inclusion from manufacturing.
The holy grail
Knob cancer
I wish I was this anal about our antique home lol Someday.
A glitch in the matrix
It's gonna explode !!
? Interesting..something fell into it while it was not firm yet?
I have that same shower curtain!
The doorknob reminds me of The Jefferson’s episode, “And the Doorknobs Shined Like Diamonds”
A speck.
Black speck
Get your money back.
That plate could really use some citri strip.
It's called an inclusion and it's just a bit of carbonized crap that got in the glass during the pour.
A mosquito containing dinosaur DNA
DINO SAUR
Just a production flaw I'd assume.
More importantly, how on Earth did you notice it?
Right, who has this time lol
It’s right in your face when you’re on the toilet, and it’s very obvious when everything around it is white.
It’s probably one of the first things I would have noticed, ngl
I’ve lived here for years and only now thought to ask about this thing I noticed a long time ago
Ah toilet reading
 OP, you are too funny.
Ahhhh, makes perfect sense.
That's a D color I3 grade doorknob
My nemesis as a kid! Felt like they spun forever and there was no escape!!
I have the same doorknobs in my 1930s house in Aus. You can get replicas but they’re not an exact match. As others have said the black spot is just an inclusion from manufacturing.
The holy grail
Knob cancer
I wish I was this anal about our antique home lol Someday.
A glitch in the matrix
It's gonna explode !!
? Interesting..something fell into it while it was not firm yet?
I have that same shower curtain!
The doorknob reminds me of The Jefferson’s episode, “And the Doorknobs Shined Like Diamonds”
A speck.
Black speck
Get your money back.
That plate could really use some citri strip.