The 356 Porsche, A Restorer’s Guide to Authenticity IV by Dr. Brett Johnson takes a part-by-part, year-by-year approach to what an owner or prospective buyer should look for when evaluating a 356 Porsche. For each year, from 1950 through 1965, the author examines every change, documented or not, of each model and now including major mechanical components. Included are the most accurate and comprehensive chassis number and color/upholstery listings anywhere.