What brand of bracelet does Tony Soprano wear?

It's called a curb link.

http://leprechaunstore.com/men_s_fancy/men_s_chains/two_tone_polished_twisted_link_men_s_fancy_chain.html

http://leprechaunstore.com/men_s_fancy/men_s_chains/two_tone_long_polished_link_man_s_fancy_chain.html

twisted link and three curb links thas the soprano bracelet