I am in NE Texas,, born in Dallas and lived in Mesquite !!
Is there some reason your Grandmother could not have either purchased it or possibly it was given as a gift to her at that time?? When you stop and think about it mid century would be 66 years ago ( I was born in 49 ) !! Or slightly earlier !! So 1940 to 1960 !! Why do you think its older than that ??
There is no makers mark or stamp and no artist/designers signature !!

In answer to where I am, Houston, TX (raised in Fort Worth). I only remember my mother had and it came from my grandmother and I’m 76 so it’s not mid century. I completely in the dark. Thanks for your replies.

Thank you !! The bottom does not show the age I would expect from something early !! My guess is that it is an import and likely mid century or after !! Italy is my feeling as its more their style !! No crazing of the surface that is typical of many older items !! Although that is certainly not definitive !! Probably had a stick on label as many do !!
Are you here in the U.S. ??

Two more pictures

Is anything on the bottom ?? But you said no markings didn`t you ??
The shape and size are similar to chocolate pots !! But yours has no lid !!
Can you take a pic of the bottom ?? Will help to tell age !!