No chassis number listed unfortunately, but reported RS Lightweight for sale in Boston area (no affiliation).
https://www.hemmings.com/classifieds...s/1973792.html
Location: Boston, Massachusetts, 02115
Mileage: 78170
Transmission: Manual
Condition: Good
Exterior: Light Yellow
Interior: Black Cloth
Seller’s Description:
1973 Porsche 911 Carrera RS Lightweight. This is the most extreme Porsche 911 of its day, especially the Lightweight edition. This prized Porsche is one of only 240 produced, and I can only imagine how few are left.
This baby is a cut from a different cloth than other 911s. Factory modifications include stiffer suspension, weight reduction, and a larger displacement. In recent history, the air-cooled 2.7-liter flat six-cylinder engine was restored by 901 Shop in Florida. Miles driven since wasn't listed, but there are 78,170 showing on the OD. During the same year as the engine overhaul, the entire vehicle was restored to concours quality by the famous hands of Nate Caldwell and Douglas Brown.
An outstanding feature of this vehicle is that it has all original paneling and glass, which beautifully presents its age. All documentation is in supreme condition showing all of its racing history, maintenance, updating, and previous owner dealings with the vehicle. The ultra desirable edition, rarity around the world, immaculate condition, and famous restoration specialists combine to put this 911 Carrera RS Lightweight in the spotlight. Serious Calls Only 914-246-2123
Price: $1,389,000 obo