Vintage Chevrolet Certified Mechanics Patches.

These patches were awarded to Mechanics, who had first completed their initial 90 days of employment with the delership. Only 30 required for Mechanics who transferred from some other GM delerships or manufacturers like (Chevrolet, Pontiac, Cadillac, GMC, Buick, Oldsmobile, Opel, Holden, Vauxhall, LaSalle, McLaughlin, Oakland, Detroit Diesel, Allison Aircraft). In addition, the mechanic had to complete an educational series with test to be graded by the shop manager, shop steward or union representative that came in 20 each 3 inch binders, later turning into 10 cassette tapes with photo books then being produced as 5 VHS or Bata cassettes of 90 to 203 min each, then Lazer Disc and currently available un an employee only area of the GM website.