We've had two W123 wagons that came with the folding triangles. A 1980 and either an 84 or 85 (I forget which one came with the triangle).

I've seen folding triangles at truck stops that are fairly similar to the W123 wagon ones.

-Tad

__________________
1995 G320
2003 C230 Kompressor Coupe
2005 ML500
2007 ML350