Could the code have possibly been 457?
GAHH Online Store

Hmmm......maybe it is 257 --- Nope! It's not 250
1980 - 1998 Mercedes Leather Color List from World Upholstery & Trim

and 157 in MB Tex:
1980 - 1994 Mercedes-Benz Tex Vinyl Color List from World Upholstery & Trim

Hmmmm.....plot thickens; 5006 on the carpet?
German Feintuft Velour Wool Blend Carpet Color List from World Upholstery & Trim

OH --- I like this --- they don't know the number or what to call it:
K&K Manufacturing - Leather for 1980-Present Mercedes Cars

huh? K&K Manufacturing - German Velour Carpet

__________________
daw_two
Germantown, TN

Links:
Sold last car --- 05/2012 1984 300D Light Ivory, Red interior
No longer selling Cluster Needles Paint
No longer selling New Old Stock (NOS) parts

Past:
3/2008 1986 300SDL "Coda"
04/2010 1965 190D(c) "Ben"
& many more