What you've got there is the Custom option seat trim. The Deluxe (standard) seat trim was a Charcoal all vinyl material with a rectangular pattern. You can find both at SMS Auto Fabrics although I found their Deluxe offering different than what was originally used in my 59. I opted to upgrade my seat to the Custom fabric. BTW, the Custom fabric is offered in green and blue also depending on the paint color you have/use.


Bruce
Old Toy: Ol' Betsy stock 59 Apache SB Stepside (Gone but not Forgotten)
New Toy: 1962 Impala SS Coupe
The Driver: 1990 Toyota truck