This is a French JTL Medio Fino Violin made in Mirecourt, France. JTL stands for Jérôme Thibouville-Lamy & Cie a musical instrument making company in France formed by Louis Emile Jérôme Thibouville and Marguerite Hyacinthe Lamy at around 1900’s.

This is a French JTL Virtuoso Violin Copy (c 1900) of Francisco Ruggieri dated 1671. Ruggieri was a skilled instrument maker from a renowned family of luthiers in Cremona, Italy. JTL represents Jérôme Thibouville-Lamy & Cie, a French musical instrument manufacturing company established by Louis Emile Jérôme Thibouville and Marguerite Hyacinthe Lamy in the early 1900s.