So these are some recent eBay purchases, and I wondered, who would have worn this GM10 pin? I thought GM10 was an internal code name for the W's? The listing said that it was a from a former Olds employees collection.
Then, I have this next one... sort of related to W-Bodies - inside there is press info on Olds Aerotech, Buick Reatta, Chevy Venture, Pontiac Banshee, Buick Lucerne, Cadillac Voyage, GMC Centaur, GM Sunraycer, Pontiac Grand Prix, Buick Regal Limited, Olds Cutlass Supreme, Chevy Beretta GT... This was a press kit put together for GM's new models, and concept cars by all GM makes in 1988, it was an exhibit too at various cities in the US. The sellers father worked with Roger Smith and kept some items - we're not sure if Roger actually wore the pin.