Thanks, R3tired. I took the bike (funky fork and all) for a 15-mile familiarization ride today. I am impressed with the bike, to say the least.

This Ciocc San Cristobal appears to have a fork similar to mine. There appears to be something stamped on the crown, but not the typical Ciocc pantograph. I was unable to copy the photo, but here's the link. I will also contact the seller about the fork.

Ciocc Vintage Frame Modern Campy 10S 54 | eBay

Dunno: the seller may call it a San Cristobal, but this is clearly a late frame built by the (very competent) contractors who bought out the Ciocc name from Giovanni Pellizoli. It has internal cable routing and a Cromor tubing decal...same sort of seat cluster as on my own "late" Ciocc which is also contract-built and from the early '90s. Maybe that fork is original (and if so might have Cromor blades) it appears to have the word Ciocc at an angle, which is similar to the panto on my "late" Ciocc fork, but that crown style is different to mine.
My other Ciocc is a genuine San Cristobal from the early days and was hand-built by Giovanni himself, and the difference is quite apparent. They are both very nice bikes, but the earlier frame is very nicer

Thanks, unworthy1. Have you posted any pics of your San Cristobal? Just out of curiosity, what do you make of my frameset?

I think I only have some "before" pics of my San Cristobal, and it was in VERY rough shape when I bought it.
here's one showing the forkcrown

and one of the decal

It makes me shudder a little to see how bad the paint and chrome was, but underneath there was a gem.
I'm partial to the brand (owning 2 of them) and even a "budget" model made with Aelle or Cromor tubing will be a fine rider IMHO. If yours has a smooth steerer butt (no rifling in the base) then the fork MAY be Cromor and if it's an OEM fork the rest of the frame may be too. I did check and the seat tube has same wall thickness as SL so the seatpost in Cromor would probably be 27.2...what's yours?

The seat tube is 27.2, which I assumed was SL. It could be Cromor, but I thought Cromor came along in the 90s. My frame has indicators of being early to mid 80s in manufacture, based on what I know at this point. I will check the seat tube for spirals later today.

Just an FYI: it's the steerer that will have 5 spiral ridges in the inner base (usually visible if you remove the front wheel and turn the fork over) that indicates the fork (and implies the entire frame) was build with an SL or SP tubeset. If the frame is a later build it could also indicate an SLX, SPX or TSX tubeset, but those would also have similar "rifling" in the base of the 3 main tubes, for which you need to remove the BB unit and shine a light into the BB shell where the main tubes are brazed.
Typically the lower-cost tubesets (Aelle and Cromor) use a smooth steerer (no rifling in base), and Aelle usually has a 26.8 seatpost.
Cioccs have been built with all of the above tubing, maybe some combinations as well, I've even seen one re-badged ALAN aluminum frame and it's possible that the contractors briefly used Oria tubing for a few.
One last question: does it have the little "man on a bike" stamp on the rear brake bridge that would indicate a 10-speed Drive import?

Thanks for the info. I'll check the fork and bridge after work. I contacted Pelizzoli World as well and sent pics. Waiting for their response.

I was looking at the pic of your frame and it looks like you have the desirable tear drop lugs. I'm no expert but from what i have read they are very thin points that require more than a little skill to do right. I have those as does unworthy1. Also on my frame the bottom of the lugs are thinned to almost smooth to frame. I guess the tear drops are not thinned, well because there isn't much to them. I don't know why some have the tear drops and some don't but might be a quality indicator.

No spirals seen in the steerer tube, but it's pretty dirty in there. I'll clean it this weekend and take a closer look. No little bike man on the rear brake bridge. No reply yet from the good folks at Pelizzoli World.

Rode 25 miles tonight on the Merckx, wondering how the Ciocc would perform.

Heard back from Pelizzoli World:

"hello I showed the pictures to my father Pelizzoli John and me that the frame is a CIOCC original done by him but the fork was changed

Inviato da iPhone"

What happened to the pantographed fork, if it ever had one, will remain a mystery. Now a new search begins!