Not FB and that only really counts on merc dimes IMHO. I see a LDS dime, aka struck with worn out dies. Please work on taking a bit better photos in future posts, less glare and in focus. Also, as a general rule: one full coin pic of the obverse and reverse as well as one or two close-ups where and when needed. John1
( I'm no pro, it's just my humble opinion ) Searched 6.5 +/- Million Cents Since 1971
The fields are showing die flow lines. The devices die wear and the devices on Liberty are showing MD on the bottoms of these devices. These are die events. (aging). Looks like this die was polished a couple of times before and now the devices are starting to distort. (Polishing to a die is like a facelift) So the die will probably be re-polished one more time and then see if it is is worth one more polishing. But they start to distort more at that dies continue to age.