Ages 6+. Classic series. Genuine Duncan toys. The original. World's no. 1. If it isn't a Duncan it isn't a yo-yo. Genuine Duncan: For more than eight decades, players have depended on Duncan's performance and quality. With practice, you can perform hundreds of tricks! Mastering difficult tricks will make you a better and smoother player. Duncan - The original butterfly world's no. 1. CE listed. yo-yo.com. Made in China.