I bought Micro Trains 100 ton, 3 bay hoppers in C&O road name.  I removed all the C&O identification and left the capacity data.  I then applied Great Decals N scale battleship gondola decals in accordance with the direction for battleship gons.  A finish with dullcote and that's it!  I call them "poor man's" battleship gons.

[Note: The photo above is a composite cobbled together by the webmaster using images shot by Bruce.  If you like the result, congratulate him.  If not, blame me!]