Corinthian leather is a term coined by the advertising agency Bozell to describe the upholstery used in certain Chrysler luxury vehicles beginning in 1974. Although the term suggests that the product has a relationship to or origination from Corinth, Greece, there is no relationship; the term is a marketing concept. Some sources say it was a blend of leather and vinyl (seat surfaces were leather and seat sides were vinyl), while other sources say it was simply a trade name for American produced leather, much of which was produced at a plant outside Newark, New Jersey.
The term was first used during the marketing campaign of the 1974 Chrysler Imperial, but the it is usually associated with the marketing campaign for the 1975 Chrysler Cordoba and that campaign’s celebrity spokesperson, Ricardo Montalban, who described the car’s seats as being covered with ‘soft Corinthian leather.’
The Daily Omnivore 