Walter, I can't be sure about your archtop but it looks a lot like an Airline. The National-Dobro company went out of business in 1942. As most of the materials were deemed to be war essential. They resurfaced in the 50's as the Valco company, branding guitar's for a number of sellers including Sears and Montgomery Wards. One of their hallmarks was the headstock shape that has become to be known as the Gumby.