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The WL is not exactly the most revolutionary motorcycle in the history of the Milwaukee brand—it is based on the Harleys of the 1930s. The biggest innovation on the WL was the use of aluminum heads, which were much lighter than the cast iron version produced before it.

Other than that, Harley-Davidson quite understandably did not make any changes to its motorcycles in the period of World War II, except for the colours which were either grey or silver-grey.

Widely used in military circles, the WL shown here was donated to the Museu do Caramulo by João Maria Lopes Figueiredo Lacerda, after entering Caramulo in 1966. It was, for many years, in the service of the Road and Traffic Police (PVT), which is why it still has a siren and registration documents from the PVT.