Initially a typewriter and two-wheeler manufacturer, the German brand Adler started to produce automobiles in 1900. Here we have the 4-seater cabriolet version of the unusual 2.5-litre, introduced in November 1937 (NEO has already reproduced the sedan). Its bodywork was made by the coachbuilder Karmann that also produced a 2-seater variant. Adler did not resume production after WWII.