There were some gold plated 'commerative' models made over the years. This could be one of them that has been recovered with the white material. It seems that brown suede covering was the original. See:
http://www.rolleiclub.com/cameras/tlr/info/GX.shtml

"Rolleiflex 2.8 GX Model 1 - "Gold Expression"

Special Edition celebrating 65 Years Rolleiflex TLR cameras. Gold plated with brown suede leather-like surfaces.
Serials:
Individual numbering 01/33 - 33/33, only 33 pieces made in 1994.

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Taking lens: Rollei Planar HFT 2.8/80, bayonet 3.
Viewing lens: Schneider or Zeiss Heidosmat 2.8/80, bayonet 3
Shutter:
Synchro Compur X, 1 - 1/500 sec., B, X-sync., self timer.
Film: 120/220 for 12 or 24 exposures exp. 6x6, & 35mm adapter Rolleikin 2.
Film Transportation: winding lever with auto stop on first exposure, exposure counter for exposures 1-12. Blank film pressure plate.
Built in TTL exposure metering with 2 photo cells.
Dimensions: 10.9x10.8x14.7cm.
Weight: 1,275 grams.
The background of the Rolleiflex name plate is brown, to match the leather surfaces. All visible metal parts are 24k gold plated."