Whats the difference between 66 & 69 steering Columns?

Fabman said
Sorry...didn't mean the actual Steering Wheel...I mean the little copper / brass horn button contact wheel that is inside under the steering wheel next to the turn signal switch....

Here you go; they appear to be the same. The first pic is from a 65/66 wood sport wheel; 2nd is from a 68 or 69 wood sport steering wheel.