My grandson in Hamburg Germany has a 1/64 which is a real, actual violin. I bought it from
www.angelicoviolins.com in Virginia, USA. The next size up is the !/32, and the next size up after that is the 1/16. My son used the 1/16 when he was 4-6 years old in 1974-76, and grew up to be a professional violinist. He started out with Suzuki violin. I hope that this is helpful information. Granny Skippy