I know that new safety regulations say the wood pieces have to have be glued to a metal backing to prevent splittering in an accident. I looked real close at the ashtray, trying to find the seam between the wood and plastic, but it didn't look like there was one. The seam that I saw was one that you would get when fusing 2 pieces of plastic together, "flash". I know that in my W116 the wood is the genuine article, at least an 1/8" thick. Of course I don't have the Burlwood, I have the standard Zebrano.
1994 MB E320 Coupe (199,500 mi)
1992 MB 190E 2.6 (173,000 mi)
1983 Porsche 911SC (148,000 mi)
2004 Volvo V70 2.5T (198,000 mi)
President of CT/Westchester Section