My Father was a Soda Jerk (testing how old FReepers are) when he was a Kid in New Jersey.
He made the best Egg Creams and Ice Cream Sodas I’ve ever had.
As I write this I am looking at our Seafoam Green Hamilton Beach Malt (Model 25) Machine 1930’s Vintage that he bought from his old Boss. Still works like a charm.
We have one of those old sea foam green machines as well. Was my great grandmothers. We also have her off white one as well. Like you said...still works like a charm!