hi everyone
i'm a new member to the forum. i've been posting things as I can get it together.
i need to 'splain my sudden presence on this forum so that this post makes sense.
i found my way here after googling '1889
Indian penny errors'. the very first hit brought me to this post from 2016 by member Brian Coner:

that's a screenshot of part of Brian's post. that coin in his post matches my coin, an 1889
Indian Head cent with missing denticles. not missing a few, a couple, some, or many; they're missing entirely, obv & rev:


no denticles.
i posted the screenshot so that any of you looking at this could go back and hunt down the original post. if you find it, you will find my first few postings in which I address the handful of replies to Brian's original post.
i was taken aback as I read through the replies; no one called the coin what it was until I posted: missing denticles.
when I found mine, it took me a minute before I could see the issue. coin looked funny but I wasn't picking up on the missing denticles. coin even felt funny in my fingers. raised edges feel funny with no denticles to soften the feel of the edges.
when the missing denticles sunk in, I again went to
ebay to find others and found several, past or present.
my coin is missing all denticles, both sides. looks like denticle footprints on the coin, but no actual denticles. you can see traces of denticles where they should be, but aren't.
i don't know what causes denticles to not appear on the coin during minting. i'm going to have another look at it after breakfast. when I first examined it, it seemed almost like inverted denticles. like the denticles went negative. i'll do more examining & report back later with my findings, if any.
*** Moved by Staff moved to a more appropriate forum. ***