Ever hear of Rexzine? It's the curious material that Bentley once used around their car bodies. Mysteriously, no one knows exactly what it was.

See how whatever isn't fenders and hood is a material that looks like leather?

Early Bentley’s came with a fabric body called Rexine. When world-renowned collector Peter Livanos found his 1929 open tourer with body by Vanden Plas, the car was in sorry shape. To make matters worse, no one knew the recipe for Rexine—it had been lost for decades after fabric bodies fell out of favor—so restorers turned to other fabrics as replacements.

But, says Graham Moss, a Bentley restorer spent years tracking down the right mix to produce Rexine. And just as he honed in, his friend and Bentley historian learned of an existing, long unused Rexine machine in an abandoned English factory in the process of being demolished.

Long story short, Hartley’s Bentley was the first to receive a brand new, period correct body.

http://www.montereycountyweekly.com/blogs/arts_culture_blog/the-cars-the-shows-and-the-dreary-economic-warning-a/article_fab3be28-c37f-11e9-8486-2b35d92b0f62.html

https://www.lbsbind.com/documents/cms/docs/FabricOctane.pdf