Worked for GM for 25 years and collected pins.  This is a great board measuring 22"x17" with over 150 pins.  I have more that I will include that are sealed.  Let me know if you have any questions about any of the collection.  If you are a GM (Buick, GMC, Chevrolet, Pontiac, Hummer, Cadillac, & GM) Pin Head then this is the collection for you!!