A bit of an orphan in the Lionel HO rolling stock of the '70s is this
3-Dome Tank Car model. Though present for every Lionel HO catalog from 1974 through 1977, no roadnames beyond Dow are found.
The 3-Dome Tank Car never gets listed as a separate sale release.
Tooling mirrors the Bachmann example, as it should as this model was produced by Kader in Taiwan
for Lionel. Kader is the parent company of Bachmann and operated a plant in Taiwan in the '70s that produced models for Lionel,
as well as AHM and Bachmann.