What kind of Accessory is shown in the picture?

Something I haven't seen for a long time. Wish that classy style of dress would come back.

Some gentlemen insist one is not properly dressed unless wearing a shirt that requires cufflinks along with "hand tied" bow or Windsor knot. Of course, black or cream color dinner jacket goes without saying.

I hated using them . Give me a button anyway.

my dad had many pairs of them during the 60's & 70's. I wear them occasionally when going out....

I use them very often.