The Longchamp was a close relative to DeTomaso's Deauville. They shared a similar platform and both were designed by Tom Tjaarda and built by Ghia. (The Pantera was also a Tjaarda design. DeTomaso owned Ghia from 1967 - 1970. In 1970 he sold it to Ford.) As with most of DeTomaso's cars, power came from a Ford V8. In this case the 351 "Cleveland", the same engine used in the Pantera.
This was a luxury car and not a sports car per se. The interior was leather and what appears to be (at least in this car) corduroy. This was a car meant to compete with Jaguar, Mercedes and other European luxury coupes.
Looking at this car gives you a hint of where DeTomaso would take Maserati in the 1980s. Squarish design, lots of leather, lots of luxury. In fact, the first "new" Maserati built under DeTomaso's ownership was the Kyalami, which was nothing more than a slightly redesigned Longchamp with a Maserati V8 replacing the Ford engine.
This car was bought new by the seller's father. It looks like you'd expect an 8300 mile Longchamp to look. Perfect. Curiously, the seller says that "several years ago" the car was given a bare metal respray. While I know that Italian bodies of the 1970s and 1980s didn't hold up very well, you have to wonder why a garage-kept, low mileage car like this would need that.
I've always admired Alejandro de Tomaso and his cars. For many years De Tomaso cars were genuine bargains, but in recent years the Pantera has (rightly) crept up in price. The sedans and coupes have been slow to follow though, even though there were far less made (only 409 Longchamps were built in total.) It will be interesting to see what this car, with its low mileage, is bid up to.
Located in Sycamore, IL (I think), click here to see the eBay listing.