Vintage detachable collar, Metropole Brand, Corona style.  Early 20th century (probably Edwardian).  Depth 1.5 inches.   

You will need a pair of collar studs to fix this collar to your tunic shirt.  These studs are NOT included, but are available separately (the stud in the pictures is just for display).

Size: Collar size 14.5 (to fit shirt size 14). This is a fairly small size for a man, and may have been intended for teenagers or for ladies to wear.

Condition: Vintage collar, around a century old, but never used and in excellent condition. Has kept its colour well.