Ref. 015 – Viola: J. Cuypers, 1801, Den Haag

Ref. 014 –Viola: C. Pirot, 1813, Paris

Ref. 004 –Viola: G. Pareschi, 1953, Italy

Ref. 003 –Viola: Benoit Boussu, 1753, Brussels

Ref. 004 – Viola: Derazey H.Mirecourt 1850

Ref. 005 –Viola: Vidoudez P. - Genéve 1967

Ref. 006 –Viola: Averna A. - Palermo 1915