61302252_Harp_Guitars_of_Settimio_Gazzo__Comments
Quality of workmanship: [Gazzo] "semi-professional" [Mozzani] fine [Comments] 
Gazzo's instruments show the signs of being handmade by an individual "semi-professional" (or hobbyist, which he apparently was), while Mozzani's are consistent and finely made instruments from a master workshop.
The Harp Guitars of Settimio Gazzo
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