Today on MCC: Every Story We Published on September 14Modern Car CollectorEve NowellTue, September 15, 2026 at 11:00 AM UTCAdd us on GoogleMonday on Modern Car Collector came down to a single question asked nine different ways: what is documentation actually worth? A 1963 Corvette Grand Sport answered it with $18.7 million built on twenty-three years of receipts. Grace Kelly's Rover P6 answered it from the other side, where association attaches itself to a car permanently and not always kindly. In between were two pre-war Harleys whose case rests entirely on what has not been replaced, a 400-vehicle Minnesota truck collection, and a weekend of auction results in which buyers paid up for certainty and ignored everything that needed explaining. Here's everything we published on September 14, in order, so you can catch up on anything you missed.Whipple-Supercharged 1939 Ford Deluxe Is for Sale at Vicari Auctions Biloxi Fall 2026Cataloged as Lot S931, this prewar Ford pairs 1939 Deluxe bodywork with a Whipple-supercharged modern V8 and a build sheet that backs up the claim that it was made to be driven rather than trailered. It is the shape a large part of the prewar market has taken: the value argument rests on the quality of the build and the honesty of the description, not on what left Dearborn.1948 Harley-Davidson WL Flathead for Sale From the Rick Yerick Collection Is an Honest Piece of American IronOffered as Lot #101 by Premier Assets LLC through Proxibid with bidding closing September 17, this WL is less a restoration project than a documented archaeology dig. The appeal is in what has not been replaced — the kind of unmolested pre-war and early post-war iron that is getting harder to find every season the restoration industry runs.1964 Jaguar XKE Competition Coupe at the Saratoga Motorcar Auction Is a Historic Racer Ready to RunA Classic Showcase-restored Series 1 3.8 Competition with under 400 miles since its rebuild heads to Saratoga. The rare part is not the specification but the readiness: historic racers usually arrive needing a season of sorting before an owner can use them, and a freshly rebuilt car with almost no miles on the work removes the single biggest hidden cost in vintage competition.1941 Harley-Davidson UL Flathead From the Rick Yerick Collection Is Pre-War Iron Worth ChasingAdvertisementAdvertisementThe second Yerick machine we covered: a 74ci pre-war Big Twin carrying original Harley-Davidson components, also closing September 17 through Premier Assets LLC. Pre-war Big Twins with their factory parts intact have held their footing while the custom and resto-mod end of the motorcycle market has wobbled — originality is doing the work here, not displacement.1972 Chevrolet Suburban LT At Carlisle Auctions Is An LS2-Swapped Family HaulerA Medium Olive Poly C20, cataloged as Lot 225 and slated for Truck Hour at Fall Carlisle '26 on October 1-2. Full-size wagons have rarely been better positioned than they are right now, and this one makes a straightforward argument for skipping the modern three-row crossover entirely — usable space, period presence, and a drivetrain that will not strand the family.The Collector Car Market Paid Up for Certainty This Weekend -- and Walked Away From Everything ElseA $968,000 Ford GT in Las Vegas, a 60 percent sell-through at Ascot, a $270,000 Diablo and a withdrawn Impala on Bring a Trailer. Read together, the weekend's results say the same thing from four directions: money moved decisively toward cars whose story was settled, and simply declined to engage with the ones that needed an explanation.The Pickup Man: Inside the 400-Vehicle Redwood County Truck & Car Collection AuctionRoughly 400 vehicles assembled over a lifetime in Redwood County, one of the largest privately built truck collections in the Midwest. With a hoard this size the individual lots are rarely the story. What a sale like this actually tests is how deep the bench is for honest working-class iron once it all hits the market on the same weekend.Today in Collector Car History: Grace Kelly's Rover P6 3500 and the Real Price of ProvenanceAdvertisementAdvertisementMost dates in this series belong to a debut or a hammer price. September 14 belongs to a loss: Princess Grace of Monaco died in a Monaco hospital on the evening of September 14, 1982, a day after the crash of her Rover P6 3500. It is the hobby's most instructive reminder that provenance is not automatically an asset — association changes what a car means, and not always in the owner's favor.The Grand Sport's Owner Spent 23 Years Driving a Car He Could Have Locked Away. That Is Why It Brought $18.7 Million.Chassis 003 is not the most original of the five 1963 Corvette Grand Sports. It is the most documented — and twenty-three years of concours appearances, vintage racing and certifications are precisely why it became the most expensive Corvette ever sold. The owner used the car instead of preserving it, and the paper trail that use generated turned out to be worth more than untouched originality would have been.That's the full slate for September 14. Check back through the day for new stories, or follow along as fresh listings and auction results come in.Join our Newsletter, follow our Instagram page, and follow us on Facebook.