Vintage shirt collar, made around the 1950s.  Lion Brand by Old England.  
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 15 (to fit shirt size 14.5).

Condition: Vintage collar, very old, well used, and definitely looking its age.  Slight yellowing of the starch, and visible wear around the top (fold line) of the collar, as shown.  Might pass muster a part of a genuine vintage outfit, but definitely no longer smart!