The second generation of Chevrolet vans were introduced in 1967 and consisted of models with the 90 or 108 inch wheel base, both of those numbers appearing on the bottom of this button. This dealer’s promo button reads in full “’Man The Vans ‘With Chevy’ They’re Great/90-108-V8.” Exceedingly subtle toning of the cream bkg. but still displays extremely fine with full gloss. Only example we’ve seen.