An illustrious collection of old outboards can be admired at Danmarks Museum for Lystesejlads. It currently comprises around 30 different models from the 1920s to 1970s and is constantly being expanded.
The small, lovingly designed museum is located on the grounds of Valdemar's Slot on the island of Tasinge, directly on Svendborg Sound.
http://www.lystsejlads.dk/