|Excelsior Super X Model 19 combination on|
a family outing.
This would have been an extremely rare and imposing machine on the roads of Britain back in the day just as now. It's a Excelsior Super X Model 19 61cui ioe engine made from 1915 to 1919. Excelsior were suppliers to the American military alongside Harley Davidson during the Great War. The Excelsior Motorcycle Company sold machines under the Super X brand and from 1912 onwards were part of the Schwinn empire. Schwinn shut the brand down in 1931 at the height of the Great Depression.
Given that Super X were used by the American military it seems that there is a good chance that this example was sold military surplas after the war and hitched up to a British sidecar (they were used as solos by the military).
|Excelsior Super X Model 19 on the road.|