Here is some more info on Hagerty
-Dave Kinney, September 2015
The Hagerty Price Guide Index of 1950s American Classics is a stock market style index that averages the values of 19 of the most sought after collectible American automobiles of the 1950s. The list to the left shows the cars that make up the index, while the graph above shows this index’s average value over the past five years. Values are for #2 condition, or “excellent” cars.
Here are the cars the index
1959 Cadillac Eldorado Convertible 8-cyl. 390cid/345hp 3x2bbl
1955 Packard Caribbean Convertible 8-cyl. 352cid/275hp 2x4bbl
1957 Ford Thunderbird Convertible 8-cyl. 292cid/212hp 2bbl
1957 Ford Fairlane 500 Retractable Hardtop 8-cyl. 292cid/212hp 2bbl
1958 Studebaker Golden Hawk Hardtop Coupe 8-cyl. 289cid/275hp 2bbl SC
1956 Ford Fairlane Convertible 8-cyl. 272cid/173hp 2bbl
1950 Oldsmobile 88 Station Wagon 8-cyl. 303.7cid/135hp 2bbl
1959 Chrysler 300E Convertible 8-cyl. 413cid/380hp 2x4bbl
1957 Chrysler 300C Convertible Coupe 8-cyl. 392cid/375hp 2x4bbl
1953 Hudson Hornet Club Coupe 6-cyl. 308cid/145hp 2bbl
1953 Cadillac Eldorado Convertible 8-cyl. 331cid/210hp 4bbl
1958 Chrysler 300D Convertible 8-cyl. 392cid/380hp 2x4bbl
1956 Continental Mark II Hardtop 8-cyl. 368cid/285hp 4bbl
1957 Pontiac Bonneville Convertible 8-cyl. 347cid/317hp FI
1953 Oldsmobile Ninety-Eight Convertible Coupe 8-cyl. 304cid/165hp 4bbl
1958 Cadillac Eldorado Sedan 8-cyl. 365cid/335hp 3x2bbl
1954 Buick Skylark Convertible 8-cyl. 322cid/200hp 4bbl
1958 Chevrolet Bel Air Convertible 8-cyl. 283cid/185hp 2bbl
1957 Chevrolet Bel Air Convertible 8-cyl. 265cid/162hp 2bbl
It was interesting to see that the Mark II is one of the cars that they are interested in.