An On30 Boxcab built on a Bachmann On30 Gas Mechanical locomotive.
I built this On30 Boulder Valley Models Little Bose Boxcab kit a couple of years ago and it was a fun kit. All the detail parts are included in the kit, which was built on top of a Bachmann On30 Gas Mechanical locomotive.
I built the kit pretty much as specified in the instructions and used the salt weathering method they suggest to produce the peeling paint effect.
I had originally planned to use this engine on a small On30 mini layout but decided not to build the layout and instead sold this engine on eBay.
You can see more images of the completed kit below and a short video at the bottom of the page of the Little Bose Boxcab running on my old HO scale layout.