Well i scoured the internet and did not find one image that fit.
It wasnt a micro, it was at least 20in tall, and was brass not enamel, it was a lever and had the steam wand on the right side.
saw it at a flea marlet, best I can decduct it was a unit from the 50-60s, it was an after thought, the proce was $50, if I thought it had real value and wanted to refurbish , I would have looked it over / asked more questions.
Maybe it will be there next time if he didnt sell it.
I have never tried one of those types so I have no idea how it all works anyways.