The coating on your pan is Nickel. The use of chrome was rare starting in the 1920s and banned in the 1940s for the war effort. Nickel is as bright as chrome but not as durable, in fact, chrome is a thin plating over nickle. As to the pan itself, I just saw one on eBay currently going for $29.99 and what I gathered is that it was made sometime between 1930 and 1955 by the Detroit-Michigan Stove Company, which went out of business in 1955.