2-piece European Maple (A. pseudoplatanus) Violin/Viola back. Master Grade. Beautiful wood.  Matching ribs included.   Viola outline shown is about 265mm at lower bout. Cut 2016.  Note that this back set has a width of 283mm and a length of 460mm.  The included ribs are 455mm long (4) and are 50mm wide. Min. Billet Dimensions: 24mm x 9mm cross-section (each side) 283mm wide x 458mm long (overall dims)