Chuck it.
Jk. It's a $3 cigar.. the 5V Casks are decent.. but it doesn't surprise me that the spot wasn't spotted during QC.
Yeah.. if even your nail doesn't move it, it's a simple waterspot. If I can't lick my thumb to wipe off a little plume, I chuck it and grab something else. Mold on cigars will not typically have the green, furry, raised look we think of when seeing mold. It's often white and can be powdery. People often confuse plume and mold, some think they're the same, in different stages.
Some think it's a natural process of aging and a good thing.. whereas the crystallization of the sugars and oils in the leaf have somehow matured. I don't buy that and don't believe it adds anything to the cigar. Light mold that is discovered after lightning will impart a musty flavor to the smoke. The dankness you can smell and taste upon entering a basement or cellar.
But it can taste like anything really.. whatever is most prevalent in the air is what's getting into the moisture that's aided the mold. I've tasted cooking grease in cigars from a B&M that was next to a Chinese takeout joint before. Bought 6 cigars there and couldn't figure out what I was tasting. Took almost a year and the last stick to finally make the correlation.
That was on a layover in Atlanta over 20 years ago. Over the years I've often wondered how many other people got a little unintended crab rangoon to go with their Fuentes! That entire little strip mall they were in has been long gone.. but remember that next time you visit a B&M while traveling... location, location, location!
Anyway, unless that little splotch is cyanide, I'd venture to guess you can spark that sucker up. If it goes awry.. simply say bye-bye.
Here's what I opened up the other day to a box bought earlier this year:
View attachment 58979
That's problematic to me. ☹