When I bought my Mustang (San Jose/2.16.1965) back in 1992 I found a plastic card in the glove box that's about the same size and shape as a credit card and across the top on the front it says "FORD REGISTERED OWNER IDENTIFICATION," and in the left margin it says "OWNER CARD." At the bottom of the card is the recognizable Ford oval with the word "Ford" spelled out in the customary script style followed by: MOTOR COMPANY. There's a lot more on the card, front and back, including the car's complete VIN number, the date "02 23 65", a P.O. Box in Santa Ana, CA., and most of the codes that are on the car's door data plate. I'm delighted that this had been left in my glove box for so many years and it's now safely in my file on the car, but I would like to know more about the card--did all new owners of cars throughout the country get one of these? Was it more of a advertising ploy, or was there actually a benefit to having the card, how unusual is it to find the actual one assigned to your car, and etc.? I didn't find a build sheet, darn it, so I'll have to be happy with this "mystery" ID card. I hope some of you can fill in the blanks for me and thanks in advance. Ron...