Just curious really. I'm sure it's nothing but it doesn't hurt to ask. It does have the same markers as https://www2.briansvarietycoins.com/listings/view/201 1961 WDDR-031 Some of them are harder to see with these pics though.
MD the early 1960 the mint kicked out tons of nickels,the dies really got a workout and wore out quite often. Keep searching they are out there.....
Hard to see from the pictures, but you may want to look at the mint mark for a RPM. It could just be MD or PMD, but it looks 'thicker' that could result form a RPM.
