Messieurs !
On a recent trip with the Bavarian Army Museum I met a former member of the MBB ( Messerschmitt-Bölkow-Blohm) firm.
He told me that then 4 machines where restored; the fabric is restored, not original.
As a side story, Long ago the german WW1 ace Beaulieu-Marconnay worked for MBB, too .
Kind regards, Gunther