I've seen posts like this before, for sale on Ebay. One seller indicated that his came with a very early C-Record gruppo from Ten Speed Drive Imports... but that's just something he said. It does seem plausible, but there are other possibilities. It could be that these were made to be used in circumstances where short extension was required and the oval section of the C-record post would not allow proper clamping (though there was also a short version of the C-rec post with a shorter oval section). It could be that Campy got lazy with the very last runs of SR posts, and skipped the fluting process. This would make for a post that matched the flute-less arms.
Contrary to what Jaime said, I really don't think this is an early SR post, or even an early one-bolt SR post. The earliest one bolts didn't have the small lip just below the conical section. They were polished to the top of the conical section, while the next generation were polished only to the top of the cylindrical section. It was only the last type (circa 1985 onward) that were polished all the way up the clamp. In addition, that mirror finish is only seen in the last version. The post you have is identical to the last version of the SR post, only without the flutes. Come to think of it, if this had ever been intended as a C-record part, it is odd that it is in a late-SR box and features the SR bolt and convex spacer. I'll go with very late SR with flutes deleted to match crankarm and save costs.
OR.... a special-order batch of late SR posts was was made for a client intending to add some pantographing, or an internal binder (like Moser) but the mods were never completed. I think recall some of the internal-expanding Moser posts looking a lot like this, though the finish wasn't up to that standard, IIRC.
Tom Dalton Bethlehem, PA
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