English horse brass medallions

I am hoping somebody can educate me a little more on these horse medallions beyond what I have already discovered. First of all for of them have names

Butterfly Crest” English Horse Brass Medallion Auction Gleaton's, Metro Atlanta Auction Company, Estate Sale & Business Marketplace

Choice of Vintage Brass Horse Harness Medallions Bridle Ornaments

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Two Horse Harness Straps With English Brass Horse Medallions

Vintage Equestrian Horse Brass Medallions Brown Leather Hanging Strap Hearts

SET 13 VTG English Horse Brass Medallions Pixie Libra Cockerel Heart Stork Moon $105.00 - PicClick

Show Some Brass: A Closer Look at Horse Brass

12 Antique Horse Brass Medallions On Harness Leather

brass horse medallions in All Categories in Ontario - Kijiji Canada

Vintage English Horse Brass Medallions / Leather Strap Bell Thistle Medallion +

Horse Brass Collectors Society

8 Antique Deco English horse harness in gilded brass - Le palais