These are some logos that have been reconstructed or reconstituted because the original logo design files were not available.
Sometimes when a site is built or rebuilt, the client doesn’t have access to the original Adobe Photoshop or Illustrator files from which the graphic was made. Often they only have access to a low-resolution jpeg or gif file which would appear grainy or pixelated if re-used at anything other than the original magnification.
If at all possible, I can try to reconstitute the graphic. Here are some before and after examples: