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Antique Back Collar Stud Clip Flat For Detachable Collar | eBay
Vintage Front and Back Collar Studs for Collarband Detachable collar Tunic Shirts (One Pair) (Ref:G) - Fogey Unlimited
White Back Collar Stud
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Front and Back Collar Studs for Collarband Detachable collar Tunic Shirts (One Pair) - Fogey Unlimited
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File:CollarStuds.jpg - Wikipedia
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Amazon.com: Metal Collar Studs : Pet Supplies
Collar studs for detachable collars Spear point front and back stud | eBay
Detachable collar - Wikipedia
Back Flip Collar Stud 102 - Towler (TAGGS of Mayfair)
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.jpg "A neat contraption for recovering a collar-stud which has slipped down the back (litho)")