Wood

Back with ribs for bass arched 2nd quality

Back with ribs for bass arched 3rd quality

Back with ribs for bass plane 2nd quality

Back with ribs for bass plane 3rd quality

Back with ribs for cello 1st quality

Back with ribs for cello 2nd quality

Back with ribs for cello 3rd quality

Back with ribs for guitar walnut

Back with ribs for viola 1st quality

Back with ribs for viola 2st quality

Back with ribs for viola 3st quality

Back with ribs for violin 1st quality

Back with ribs for violin 2nd quality

Back with ribs for violin 3rd quality

Bass bar for bass