Vintage “Do The Dew” Promo Baseball Cap Hat

I’m really fond of this find and also totally content to keep it. I value it higher than your average ball-cap not just because it’s super high quality, with a black almost corduroy soft body, and denim bill that matches the design... but I think it may also be a misprint. The back logo reads “Mountnin Dew,” not Mountain or MTN... and the front reads, “Do the dew” 🤷🏼‍♀️ Vintage look and feel. Unsure of the date and can’t find another one like it anywhere.