Vintage Sheffield detachable collar by Lloyds.  Rounded front.
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 16 (to fit shirt size 15.5).

Condition: Vintage collar, several decades old, clean, starched and ready to wear, but it has been TURNED because it was badly worn on the fold line on the "right side", as shown.  Previous owners' laundry marks etc on the inside.