I posted exactly about this a couple of years ago.....:-)
My old local barber, and Italian gentleman, was an absolute master. As BobH says, they're not allowed to use straight razors anymore, shavettes only.
I chatted with my him frequently about straight razors, and eventually, I started bringing mine in for him to use on me, and show me some tricks.
By that point, I thought I was pretty slick with a straight, but this guy shaved me so close with one pass I was amazed. Used to tell me how when he was a kid his father made him shave balloons without popping them and in the dark, he said he could shave anyone in pitch darkness, and I believed him.
I brought 5/8, 8/8, 6/8, Tiers Issard, Wade and Butcher, lots of different blades in, and he never like the big blades, he said it would make his hand tired, but he knew others who liked them, he preferred a 5/8 with a coticule hone in his pocket.
He literally made me almost stand straight up in the chair when he did an ATG pass on me, not a nick, not a drop of blood, but it felt like with one iota of angle change, he'd slice my head off, that's how much pressure I felt - but one pass, and I was pretty clean, he just then did a few clean up areas and for my benefit, one WTG pass over my face.
Guys waiting in line were entranced, of course I brought the strop with me, never seen anything like it, total expert, and he didn't like my strop either, not worked in enough.
He liked the edges on my razors, but said they were very fine, but wouldn't last a day.
Took one of my razors that could use a touch-up, some lather on his coticule that he still had, literally 15-25 laps, couldn't tell, and he was done, razor was perfect.
Guys retired now, his shop sold, his son wasn't interested in it, but man, what a master, it's sad all this has gone.