The 2026 version of Mecum’s annual Harrisburg auction finished on July 25th. About five years ago, I gave up trying to chronicle every eighties vehicle sold at any particular auction—there’s often an endless sameness to them. So, I now only write about the cars and trucks that are less seen at auction—and those that sold (a Satin Black Metallic 1989 Porsche 911 Carrera 50th Anniversary Edition coupe with Silk Gray leather front bucket seats and an indicated 85,000 miles was a no-sale at $89,000). Here are five that caught my eye, described in more detail than I used to when these surveys were more exhaustive.

[Lot W107] 1981 Checker Marathon sedan. Gray with a Black vinyl front seat. LF9 105 bhp 5.7.liter/350 ci diesel V8 with a three-speed automatic and an indicated 114 miles. Said to be originally deployed as a municipal fleet vehicle in New York City and then parked for over 35 years, this unusual diesel Marathon generated a $5,000 hammer price.
[T95.1] 1983 Pontiac Grand Prix coupe. Maroon Metallic with a Maroon vinyl top and a Maroon Luxury cloth notchback front seat. LD5 110 bhp 3.8 liter/231 ci V6 with a two-barrel carburetor, a three-speed automatic, and an indicated 38,000 miles. $9,500 for this handsome Grand Prix, decently equipped for a base coupe. I have written about the notably more powerful 1980 SJ and the 1987 base coupe.

[T204] 1985 Buick Riviera T Type coupe. Red Firemist (but not listed as such) with Red Prima cloth front 45/45 seats. LM9 200 bhp 3.8 liter/231 ci V6 with sequential fuel injection and a turbocharger, a four-speed automatic, and an indicated 41,000 miles. $10,000 seems light for a relatively rare turbo T Type—perhaps better photos would have helped. I have written about the closely-related 1984 version of this car.
[T210] 1981 Datsun 280-ZX GL 2+2 hatchback coupe. Light Brown Metallic with Beige leather front bucket seats. L28E 145 bhp 2.8 liter/168 ci inline six with fuel injection, a three-speed automatic, and an indicated 60,000 miles. I have written about the two-seat coupe version of the 1980 model. At $7,500, how much was the discount because it was a 2+2?
[T265.1] 1981 Cadillac Fleetwood Series 75 limousine. Cotillion White with a White vinyl top and Blue cloth seats. L62 140 bhp 6.0 liter/368 ci V8-6-4 with fuel injection and cylinder deactivation, a three-speed automatic, and an indicated 27,000 miles. $7,000 for a limousine whose photos and video didn’t give a good view of the rear seating area.
































