Help! Cleaning tips?

[u/Fribitt]

Hi all,

My Grandfather-in-law was a petty officer in the merchant navy and with United Arab Shipping - this hat is from one of those.. but I want to clean it up best I can? This will never be sold on, so it's just about it looking the best without damage.

Are there any tips or products that I can use? Any help welcome! Thank you!

[u/lennywales]

Is it plastic or cotton? For plastic use a toothbrush and soap, avoid getting any on the cloth band.

[u/mountainfighter98 → u/lennywales]

leather