I found this 2016 dime online. Maybe it was made with same die as made your coins 4 years later? Actually, some places on the reverse of your coin match up pretty well with the reverse of the coin linked to below, as well - especially bottom of torch. I would keep the whole roll. https://www.etsy.com/listing/899118...9186&msclkid=6a95274196e81a38d0bd474613fa2871
I think I am able to trace the development and worsening of that die crack from 2015, 2016 (Maybe they gave the obverse die a rest for 2017 but the cracks on the reverse appear on a 2017 Roosevelt dime). Then the obverse die chips seem to appear again and get worse in 2018, 2019 and 2020. I could not get some of the photos to reproduce clearly so I put the links. I would like to know what you think - any of you experts, please. Thanks in advance. 2015 https://www.ebay.com/itm/Error-2015...5&algv=default&_trksid=p2047675.c100008.m2219 2016 https://www.etsy.com/listing/899118...9186&msclkid=6a95274196e81a38d0bd474613fa2871 2017 https://www.etsy.com/listing/899108...9186&msclkid=26cacc9b074518e080b4ac9cafb97cce 2018 https://www.ebay.com/itm/2017-P-Roo...649053?hash=item4223928f5d:g:v24AAOSwz-dfnyb6 2019 https://www.etsy.com/listing/899326...9186&msclkid=97b0f6c805e712a1134596cfa9e753d0 2020 - OP showed us this one.
