Uncashed Social Security check from 1971 w/ original envelope -- very rare piece

Uncashed 1971 Social Security punch card check Extremely rare and unusual collector piece
Check is valued for $64.80 , and is an excellent example of the check technology and security of the day. Obviously, it's fairly unusual to have a government check that's cashed or uncashed from any era, let alone over 40 years ago.
This is an opportunity for someone who collects bank drafts or notes, and I can make no statements regarding the check's fitness today as anything other than a collector's piece.