Electro-Hygiene 1-210
Mike, that is a beautiful 1-210 you have! Do you also have the attachments? Would like to see pics of the attachments and box if you have them. And to answer your question, YES, it is definitely worth having in your collection--I'd like to have one of those myself! It is a pre-war model, and sold next to the model 94 upright. I believe it was the first tank model of the Electro-Hygiene brand, and depending on when it was introduced it might have also been sold next to the model 80 upright, which was the first Electro-Hygiene upright.
I have both of these uprights in my collection, as well as a model 186 Royalaire tank, which is similar to the EH 1-210, except that it doesn't have the crystal chamber in front and it is charcoal gray instead of blue. Congratulations on a great find,
Jeff