I agree with Couch's comments on a lot of two button sleeves bening shown and how Roger Sterling is able to wear bespoke.
For a very long time, and it is even shown in my fall 1992 Brooks Brothers catalog, BB did quite a few suits with the two button sleeve. As for myself I like four buttons.
Growing up learing about haberdashery I quickly learned that you started off with J Press, then moved up to Brooks Brothers, and then you make it to Paul Stuart and beyond.
Don Draper always has on cuff links which is good to see. (even if they are toggle back)
Roger Sterling wears a good deal of side vented 2 on 6 DB suits, SBPL suits, cuff links, and collar pins and bars. I think I also saw him with pocket watch and chain. (I think)
Salvatore Romano and Herman "Duck" Phillips are the most natty guys on the show.
Bertram Cooper is always in his bow ties and argyle socks. (Shoes must be taken off before entering his office.)
Pete Campbell, Harry Crane, and Ken Cosgrove are your typical WASP J Press and Brooks Brothers crowd.
Paul Kinsey, although very much a WASP and J Press crowd member, is to me a bit of a rebel with the growth of a beard.
Freddy Rumsen, I'm not really sure where to put him. He is very much a WASP J Press and BB crowd member, but kind of nerdy. A few weeks ago on the show he came out of his office to show Don's secretary and Ken that he could play Mozart with his trouser fly.
The women, now what can be said about the women? Like a finely made bespoke suit, soft to the touch, elegant looking, and you can't keep your eyes off them.
Best Regards,
Cufflink79