RARE Vintage order 90’s Hawaii rainbows flat brim fitted hat

Product Name: RARE Vintage order 90’s Hawaii rainbows flat brim fitted hat
This was a souvenir from a daughter to her father over 30 years ago. It was cherished, but ultimately sat in the closet. Signature sportswear, Hawaii team the Rainbows! No color fading, VIBRANT! Size 7 order fitted cap. Has one tiny area of a dirt spot. Surface dirt but not sure what the safest way to spot clean it would be. I'm not hat savvy. It can be noted in the picture of the brim on the outer right side of the brim. Very difficult to even see it.