This does not look like the steps are full enough to get an "FS" designation. It appears to be a proof set, worth about $20.
📋 Item Submitted
1961 Jefferson Nickel FS MINT STATE CONDITION
M
Marc's Expert Appraisal
ANA-Certified Numismatist · Hudson Valley Numismatics
Similar Appraisals
Quarter on nickel planchet 5 gram weight
Everyone's an expert with the Internet. A nickel planchet would not show copper on the edge. This is heavily worn and if…
1969 s Penny double die proof I have not yet had it appraised for…
We ask people to limit their complimentary appraisals to one or two. And the two you've submitted so far suggest to me…
Have several coins with errors would like to get value and sell options. Have…
See our note on website about modern errors. Not much here to speak of.