Question for Merc experts - error coin - photo attached

Just wondering how often the raised dot between "In" and "God" was polished out of the dies on these dimes.
I have no reference materials on these, don't collect them, and I recall that Breen was silent on this.
Maybe it's common?

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Check out my current listings: https://ebay.com/sch/khunt/m.html?_ipg=200&_sop=12&_rdc=1
die chip?
Really would like the opinion and knowledge of a merc guy, maybe I'll ttt it during the week...
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Can you post a bigger picture that's a bit more focused? Also, I'd like to see the reverse, if that's OK.
Thanks!
But-assuming that it is missing (and you can see that on the pic)- what causes this on Mercs?
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