The UrS4s and early UrS6s came with a four spoke airbag steering wheel in North America. The rim is rather thin. The later UrS6s came with a three spoke airbag sport steering wheel with a thicker rim. This thicker rim feels much better and actually transforms the car, making it feel smaller and more nibble (not just my opinion).
The 3 spoke steering wheel was also found in some early A4s and cabriolets, as shown in this list:
Your sport wheel might have come from an UrS6 or an A4 sport. If you want an "S4" badge, the PN is 8A0419685B (the replacement UrS6 badges are 4A0419685A)
The clock springs on these two steering wheels are different. If you want to have self-cancelling signal lights, you will need to modify the UrS6 clock spring. Here are three methods to do this:
I ran out of UrS6 clocksprings after Method 2 so Steve Young volunteered to try Method 3. Steve's excellent DIY write up is at the link below: