Torque tube axle (Autocar Handbook, 13th ed, 1935)

• A photograph, which has never previously been made available to the public (e.g. by publication or display at an exhibition) and which was taken more than 70 years ago (before 1 January 1950); or

• A photograph, which was made available to the public (e.g. by publication or display at an exhibition) more than 70 years ago (before 1 January 1950); or

• An artistic work other than a photograph (e.g. a painting), or a literary work, which was made available to the public (e.g. by publication or display at an exhibition) more than 70 years ago (before 1 January 1950).

This tag can be used only when the author cannot be ascertained by reasonable enquiry. If you wish to rely on it, please specify in the image description the research you have carried out to find who the author was.

The above is all subject to any overriding publication right which may exist. In practice, Publication right will often override the first of the bullet points listed.

Unpublished anonymous paintings remain in copyright until at least 1 January 2040. This tag does not apply to engravings or musical works. More information

Parallel zu dieser Lizenz muss auch ein Lizenzbaustein für die United States public domain gesetzt werden, um anzuzeigen, dass dieses Werk auch in den Vereinigten Staaten gemeinfrei ist.