What is the longest wait for a TTM retrun?

[worldwideed]

Many of you saw this Brent Knackert return from yesterday, it was sent out on 3/29/2006 and returned on 11/5/2013. That's 2,778 days or 7 years, 7 months, 8 days a record for me.
It was sent so long ago that I did not even know about forever stamps yet, he was good enough to add a 10 cent stamp for me.

What is your longest return??

 

[bfd13]

Mine was 13 years by Dave Garcia. He said it fell down behind a dresser and they found it when they were moving furniture.

 

[Benson]

Only 1826 days, Glenn Blackwood (80s Dolphins). Exactly 1 day short of 5 years, sent 2/2/08, received 2/1/13.