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In response to the query I give the following reference:
Osprey "Men-at-Arms Series" #289 King George's Army 1740-1793 (2)page 16
4th King's Own: Blue facings, silver lace.
Officers with embroidered buttonholes (1769).
Battalion coys had scalloped lace on hats (1774).
Grenadiers: Cypher within garter. Light Coy: Dragoon style helmet with red mane. Lion badge on frontlet. White belts (1774).
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