UPDATE! I have found 5 different styles of advertisement for the Tyfold to be found in American newspapers in 1903, pretty well blanketing most of the USA. I’m finding Newspapers.com to be the best way to research a date for a debut of a major brand’s collar. This is especially true for a “gadget” type collar that uses a new patented feature. Click on each thumbnail to see more:
The Tyfold’s patented keyhole front feature was apparently not printed on the collar, because the Cluett Co. did not own the patent outright. According to Google Patents it was invented by Edwin F. Brown in 1902:
Also according to this small note in a 1903 newspaper, a “string” tie without a fat back band fit in the collar best:
Catalog of detachable collars and cuffs for women and children, along with small photos of collar making and collar starching workers. At this time Lion Brand was the oldest collar making trade mark in the US.