Kristinn, I promised too much, There are no serial number avalible of the maker Larsen & Petersen. There are from differnt constellations of Larsen, Larsen & Sohn, Petersen, Petersen & Petersen. Herman N Petersen. But the Larsen & Petersen were located at Bredgade 47, Copenhagen. It´s written in a book that in the 1920's there were 30 workers at the factory. Maybee I can help you better next time.. Linda
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