This hat is new, never worn, however….

I made a grave mistake. (At the time, it had tags on it and was hanging up with my other hats on my coat rack.) SO, short story, I was doing laundry, washing all of my greasy clothes from work. (I work at a paper mill). This hat was sitting on my hat rack where I hung my jacket up, me not realizing I had grease all down the back of my jacket. It rubbed on the inside of the hat as shown in the pictures. Once I noticed it, I cleaned it the best I could using dawn soap and a soft cloth. I soaked it and then, once cleaned up, I washed it in cold water. The stains didn’t lift much. Not sure if there’s anything else to do to remove them. So it does have stains but only on the inside of the hat. They may be able ti get removed if someone knows laundry better than myself. There are some small dots near the clasp also.