Duncan Professionaledit this page

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Professional
Manufacturer	Duncan
Shape	Slimline
Color	Various
Weight	45g
Dimensions	59mm diameter, 28mm width
Material	Plastic
Bearing size	Steele Axle
Response system	Starburst

The Duncan Professional was originally introduced in 1971 by Duncan. Then in 1974 it changed shape from the tournament shape to the Slimline shape. Since then it has been used as there primary advertising yo-yo up until recently. When Duncan Acquired Playmaxx it started using their ProYo for the bulk of it’s yo-yo advertising and all but discontinuing the Professional Slimline. There have been many versions of the Professional including the Superhero line, most of their advertising and even for the 1979 Duncan Yo-yo Olympics.

[edit] Photos

Side View	1979 Yo-yo Olimpics	Superhero line: Hulk	Old Logo
ADD Yo: BMW	Alien Glow	Superhero line: Hulk	ADD Yo: Kodak