Too bad you don't have #265 Mushroom interior, I just bought a good armrest and it isn't the type for a w126 SEC, but came from a sedan. It is very close but the mounting ring with the locking notch is different or it'd be on my SEC.
Anyone need one? I'll let it go at my cost. PM me.

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1986 Euro 500SEC "RUF" 9:1CR, "Rose"
1985 Euro 500SEC Cabriolet AMG Widebody
1982 Euro 500SEL "Blue"
2001 Texas Heeler (Aussie/Queensland X) "Sulphie",
2012 Queensland Red Heeler "Squeak"
Best dogs I've ever had.