Socks from anywhere, monogram from a little old lady who does monogramming all day probably.
I thought the Civil Rights Act of 1964 prohibited this sort of thing. It could also be a not-so-little old guy who spends his days hand-monogramming, you know.
We monogram our Pantherella's all the time. It's a bit more difficult than shirts because the fabric is knitted and stretches. We won't monogram the Bresciani cashmeres, for example, because the monogram sinks into the deep pile and becomes unrecognizable. Note that if someone says they will machine-monogram socks for you, this will require a heavy paper backing sheet on the reverse side of the fabric (the inside of the sock). They will probably claim that the paper will wash away. Don't hold your breath on that ... and be ready to put up with the resulting roughness for a while. On the other side of the coin, a hand monogram will probably cost more than the socks themselves. FYI, the shirts of Mr. Gotti were specified not only with no monogram ... but with no labels as well. That seems generally to be the preferred style of those who earn their living in that manner ... whatever that manner