It’s so pretty though!
Mark this under the “will go for a boatload” category.
Pantographed stems usually fetch a good amount of money on eBay and of course, Colnago pantographed stems usually fetch even more. Now, a custom-drillium Cinelli 1R stem will fetch a cool $200 at least. The only thing (structural F41L aside) this has going against itself is the crappy barclamp mechanism that Cinelli designed for the 1R stem. Those wedges are notorious for splitting and most bars from that era will slip in the clamp.