I've had this for years, on the basis that it is the same pressing as used by New Imperial in the late twenties and therefore useful. I presume that makes it as Birmingham product. There is a separate oil tank with exit only, which means it was for a total loss lubrication system. The gear quadrant "mounts" look like blanks, ie; appear never to have been tapped or have had studs on them, so however the gear change was arranged, it wasn't via a gate on the tank. It looks like original paint, and the logo of the star and banner is quite distinctive. There is no trace of lettering at all. What's it from?
JFerg