For all of the instruments and bows in our catalogue, we offer a 30-day return period, guaranteed trade-in policy and the option of having a certificate of authenticity issued. Furthermore, we offer a carefully hand-curated selection of tried-and-true violin accessories, such as the right case, rosin and shoulder rest. Top-quality historic string instruments in the Corilon violins catalogue: you can learn more about the care and cleaning of your violin bow and instrument and the history of the violin and other stringed instruments in our library.