Dave Ripp. posted:
Pecos River Brass imported the Greenville gondola with reinforced corrugated sides in the 90s in brass in O scale (4535, the UP/MP/CNW car). They are occasionally seen for sale. As a matter of fact there's one on eBay as we speak.
Since they're brass they are priced accordingly. They went for around $200 at one time but like anything else that means you'll see tons of them $150 when you're not looking or only one for $395 when you are desperate and looking.
If you so desire, if you do an internet search for Pecos River brass O scale Greenville gondola you will find a lot of info on the web.