Jeff,
The alloy supports did debut with 1st Ed. SR. When the 2nd Ed. SR was released (single bolt), that alloy support was carried over into the new NR seatpost. Even though the part #s for that support are different between the 1st Ed. SR vs. the NR, the part is identical. Whether your alloy support was originally from an early SR, I don't know. If your post is truly a NR, then it's the steel support that would not be original to that post. Without more details, it's possible you could have an old Record post, or a Superleggero post, a NR post, or a GS post. All of these posts are difficult to tell apart if your not aware of the differences.
Marc Boral
Jeff Slotkin wrote:
> Hi All,
> Likely a basic question: I recently got an NR seatpost with a steel cradle
> on one side and an aluminum one on the other. I've never seen the aluminum
> type before and suspected it might be from an early SR post. Is it? This is
> not mentioned in the Campy timeline, which I checked first.
>
> Anybody got another of either, preferably aluminum I suppose?
> Jeff Slotkin
> TheLocalSpoke
> Goose Creek, SC