Your first car.
1941 Plymouth. $100 in 1966, but I had to share ownership with my brother - big mistake. He drove it to death and by the time I got it, it burned about a quart of oil per 100 miles. Parents made me sell it for - $100. Second car, but mine without my brother, 1951 Plymouth I bought from my folks for $100. Rebuilt the engine, had the seats reupholstered and painted it yellow. I drove the wheels off of it till 1972 when I bought my 71 Cuda.