Founded in 1910 in Cincinnati, Ohio by John Ahrens and Charles Fox. The prototype had a 78hp engine in it. The web site linked to has a photo of the 1920s version.
(external link: HME Ahrens-Fox)
AmerCom Hobby is a Polish company that started off as a publisher but moved into the diecast vehicles market. This photo shows the model, part #SF-58, in its original blister pack. They are not cheap due to importing and shipping.
(external link: AmerCom Hobby)
The model's underframe is all diecast, but its upper body is all plastic. It is rather delicate. The detail quality is about medium. It is not decorated for any fire department.