This red and tan striped tie has a fascinating history. It was worn in episodes #252,262,266,272 and 277.
In episode #252, "The Meighan Conspiracy", it was worn by guest star Robert Reed.
Ten episodes and one season later in #262, "Though The Heavens Fall", it's now worn by McGarrett and who is the guest star?
Robert Reed!
Now that's good trivia.