Photo data acquired from multiple sources. It can be established that this Model M was built during 1932 to 1933 and is here attending the Air Races in 1934. The print has a photo-lab date stamp of 'Sep 19 1934'. It later carried operator titles from '(illegible) Scientific Service Inc' and was named Silver Star. Photograph taken by William H Engle. Collection holder William Engle is the son of the photographer.