Bonhams : First-year example, from an important Long Island collection,1937 Harley Davidson UL Flathead Engine no. 37UL6906
![1937 Harley Davidson UL 80 cubic inch flathead | Motorcycle dirt bike, Vintage motorcycle, Harley davidson 1937 Harley Davidson UL 80 cubic inch flathead | Motorcycle dirt bike, Vintage motorcycle, Harley davidson](https://i.pinimg.com/originals/40/23/40/40234029c385bcd6e8e39ff6d7b9cf1e.jpg)
1937 Harley Davidson UL 80 cubic inch flathead | Motorcycle dirt bike, Vintage motorcycle, Harley davidson
![STUTTGART, Deutschland - 17. März 2016: Motorrad Harley-Davidson Modell UL, 1941. Europas größte Oldtimer-Messe "RETRO Stockfotografie - Alamy STUTTGART, Deutschland - 17. März 2016: Motorrad Harley-Davidson Modell UL, 1941. Europas größte Oldtimer-Messe "RETRO Stockfotografie - Alamy](https://c8.alamy.com/compde/fxwb4c/stuttgart-deutschland-17-marz-2016-motorrad-harley-davidson-modell-ul-1941-europas-grosste-oldtimer-messe-retro-fxwb4c.jpg)
STUTTGART, Deutschland - 17. März 2016: Motorrad Harley-Davidson Modell UL, 1941. Europas größte Oldtimer-Messe "RETRO Stockfotografie - Alamy
![Classic Bike: 1938 Harley-Davidson UL | The Daily Drive | Consumer Guide® The Daily Drive | Consumer Guide® Classic Bike: 1938 Harley-Davidson UL | The Daily Drive | Consumer Guide® The Daily Drive | Consumer Guide®](https://blog.consumerguide.com/wp-content/uploads/sites/2/2019/02/Screen-Shot-2019-02-05-at-1.52.56-PM.png)