Chainguard ID and mounting hardware

[pebblewurm]

I need to fab up a front mount for this chainguard of unknown origin. Has anyone run into mounts like these? I'd like to see what the original hardware looked like before I kludge something together. Someone must have designed it this way for a reason.
https://photos.google.com/photo/AF1QipPMglB33E7REApZxQHgheR2SxkYQteh8HYcvvHZ

https://photos.google.com/photo/AF1QipNYLMB7sHnw9iBzEezP3jawWiwOS_iNeK2RN9qD