Brass casting of an HO scale spark arrestor exhaust stack as found on many Southern Pacific Alco RSD-5s.
Some people have asked about availability of these stacks. I've had more than 350 of them cast and sold over the past six years, so yes, they DO exist! In fact, photos show the actual casting and packaging. To order you need to contact me through the Espee list on Yahoogroups. http://groups.yahoo.com/
UPDATE 1/4/16: Latest batch of stack parts arrived and are beginning to ship now! That brings total production to almost 500 parts cast since this project started. Not too bad for an obscure part used by only one railroad.
PLEASE NOTE THAT I NO LONGER OFFER THIS PART, THEY ARE SOLD OUT!