Measures approximately 6 3/4" long × 4" wide × 3 1/4" deep.
Features a deeply domed lid, formed/lipped lower shell, short-end three-knuckle hinge and bolt closure at the opposite end. Back has two clean mounting holes plus an irregular center hole that appears to have been added or enlarged later. Interior retains remarkably clean blue finish.
We have not identified the exact manufacturer, motorcycle model or year. Construction appears consistent with an early/vintage motorcycle toolbox, possibly prewar. Rather than guess at a specific marque, we're leaving the application open for identification by the buyer.
Original finish shows expected paint loss, surface rust, oxidation and wear, while the cream pinstripe remains clearly visible. No major dents or structural damage noted.
Please compare the measurements, mounting-hole locations, hinge arrangement and photos carefully to your motorcycle or restoration project.