Not that I know of...Previous discussions on the subject of these saddles/covers concluded that they were not motorcycle saddles but for a self propelled gun...Black covers were normal issue for motorcycles...Ian
I made that mistake myself many years ago. But I found out that the Canvas covered saddle was made by the "Wrights" saddle company as a gun layers seat in an "Archer" gun. You can see the remains of one in this picture. As far as I'm aware all motorcycle saddles back then were Black Rexene. Ron