This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
Walter NZ KeskiSuomen ilmailumuseoLoRes. en pixels lower res image of the original image Walter NZ in the Aviation Museum of Central Finland org WalterNZKeskiSuomenilmailumuseo The author User MKFI released the image into the public domain cczero Uploaded with Walter NZ Aircraft engines at the Aviation Museum of Central