I have tried to compare this to pictures on the internet. I think it is DDO but still struggling with this. I don't think I've asked about this one before, but forgive me if this is a repeat.
Machine Doubling ? @paddyman98 @furryfrog02 there's this pic from other postings that I like to reference.
Here is an article from NGC on Doubled dies vs machine doubling https://www.ngccoin.com/news/article/5688/Double-Dies-vs-Machine-Doubling/
That first photo is a good shot of 'shelf' doubling, or what we call mechanical or ejection doubling. Compare that first photo to a photo of the Genuine 69-S doubled die cent, and you'll get an instant education in telling the difference.