The Opel Museum in Tijnje in Friesland in the north of The Netherlands is home to a wide variety of Opel cars. Most are 1950s and 1960s models but there are some older cars such as a 1936 Super Six and a 1935 Opel Olympia. The museum also sells spare parts for old Opels.
The photos below give a general impression of the museum.
Overview 
1939 Opel Kapitän 
1951 Opel Kapitän