Acoustic Guitar Auction – Irish luthier George Lowden may be best-known as the builder of signature models for Richard Thompson, Alex de Grassi, Paul Brady, Pierre Bensusan, and Thomas Leeb. This instrument is no less beautiful in look, tone, and feel; a fingerstylist’s guitar with grace and appeal. Lowden’s body shape does not fit basic classifications; this guitar’s S designation stands for “little.”.