While I would never consider any of my vintage cars an investment, it just might be time to reconsider my position. Hagerty Insurance has recently reported the value of the 1984 - 1988 editions this way: "the Z31's median #2 value is $20,600...its biggest increase to date". Perhaps the best news is, "All model years, all trims, and all conditions surged. No Z31 variant grew less than 30 percent." (https://www.hagerty.com/media/market...cars-climbing/)

And since a picture paints a 1000 words Hagerty presents this interactive graph: