Antique probably 1920s leather stud collar box this amazing leather box could be used as a lovely jewelry box or just a lovely decorative item rare in this condition most have very worn buckles etc 15 cm round 9 cm tall Shirt studs have been used in the western world since the mid-19th century to attach detachable collars to shirts. The detachable collar was invented in 1827 by Hannah Montague, who wanted to save time and labor by washing her husband's shirt collars separately. The collar was attached to the shirt with two studs, one through a buttonhole at the back of the collar and one through each of two buttonholes at the front. 
Here are some other notable events in the history of shirt collars:
Ruffs
Ruffs were popular in the 1500s and were often associated with a particular class or status. 
White-collar workers
The term "white-collar workers" comes from the white detachable collars worn by the growing office working class. 
Stiffened collars
Stiffened collars were made by soaking the collar in a starch solution, drying it, and ironing it. 
Factory-made shirts
By the turn of the 20th century, factory-made shirts were available and the style of shirt changed to buttoning all the way down the front. 
Attached collars
By the 1950s, most shirts had attached collars and cuffs that were stiffened with bonded interlinings. 
Popped collar
French tennis champion René Lacoste is thought to have been among the first to flip his polo collar on the court to avoid sunburn around 1929.