My take on the military insignia for the 177th Temporal Reconnaissance Unit alleged time traveler John Titor claimed to be a member of. Whether you believe the story was real or an elaborate hoax it is still a fun and interesting piece of internet folklore from the early 2000's.

Size is approximately .098" [2.5mm] thick x 2.94" [74.7mm] wide x 3.26" [82.8mm] tall