Small dry dot on Base on penis

Hi guys, See attached photo. Had this small dry dot (maybe 1mm) on my penis for not sure how long. At least 6 months probably a year or more. Not painful. Wouldn't really see it unless looking for it. Slightly raised. Felt it before I saw it I think. What could it be? From the photos I've seen doesn't look like a wart as its not cauliflower like and there's no cluster. I've zoomed in far so you can see clearly . Hopefully it's just an imperfection. I do masterbate on that side so maybe from friction Any ideas? Thanks in advance

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