[Ron Ramirez]

Arran, we're talking about the two thin strips of veneer on top of the cabinet, running front to back, as shown here:

[Image: http://www.philcoradio.com/gallery/images/1936/660x.jpg]

Very dark brown, almost black - and very soft wood. The 660X also has those thin strips on either side of the front panel, as you can see above.

The majority of the veneer on top is some sort of Walnut. It's the thin, very dark strips that are in question.