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 KOA Series
Open pore finish
Solid Acacia KOA top
Solid Acacia KOA back and sides

USTD S KOA - Soprano size
USTD C KOA - Concert size
USTD T KOA - Tenor size
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OAK Series
Open pore finish
Solid Oak top
Solid Oak back and sides
USTD S OAK - Soprano size
USTD C OAK - Concert size
USTD T OAK - Tenor size