The style name is "Royalty". Probably made around the time of the First World War, or shortly afterwards.
Collar size.........14 inches (to fit shirt size 13 1/2 inches).
Condition: These collars are about a century old, but have never been worn. They are unsold shop stock from around the 1910s/1920s. They are in very good condition - the only problem is that the stamps (the Radiac "hand" trademark printed inside the collar, and the style name etc) have "leaked" slightly over the decades, leaving marks on the outside of the collar, as shown. These marks are obviously at the sides of the collar, and will not show when you are wearing the collar, because they will be covered by your tie.