The 61.75 pilot certificate is issued without any ground school or flying. You are not current to exercise the privileges of that certificate (or any FAA pilot certificate) unless you have completed a flight review in accordance with 61.56 within the last 24 months.* I've never heard of the FAA signing off a flight review. It consists of at least one hour ground school and one hour in flight. It can easily be done as part of an aircraft checkout. If it is a foreign pilot with a wet 61.75 it would be a few hours of ground school before I put my signature in their logbook.
*There are exceptions for airline pilots and if you complete a checkride for a FAA certificate that counts as a FR.