I am not aware of an undecorated one. I purchased a CP Rail, no-multimark
and I put on Miniatures by Eric Alco pilot, sinclair antenna, ditch lights,
side mount bell and CP horn (relocated to the rear). The paint match is
tricky, but it looks a lot better. My question is whether the MbyE Alco 630
filter assembly is the same size as the 424 ones? The item I notice is that
the 630 one looks like it has a square grid while the photos of 424's have
a diagonal grid. The Atlas 424 is a nice running unit, and a nice addition
to my layout.
Mark Wittrup
Saskatoon