If you perform the crop, please

• copy this file metadata and upload it using this upload form with “{{Extracted from|File:S.S.R with M.G.R.jpg}}” appended to the source field.
• add {{Image extracted|xxx.ext}} to the other versions field of this file.
• add the new file as an image to the Wikidata item.

If cropping a JPEG, it is generally preferable to use a lossless cropping tool such as CropTool on Wikimedia Toolforge, Adobe Photoshop, Affinity Photo, jpegtran, or in some cases GIMP, ImageMagick, IrfanView, XnView. For more help, see Commons:Media for cleanup.