I have had some successes take a while, but never an RTS.
The postmark on my TTM to Enos Cabell, c/o the Astros was December 21, 2012. I got back an RTS today postmarked April 8, 2015.
The postmark on my TTM to Enos Cabell, c/o the Astros was December 21, 2012. I got back an RTS today postmarked April 8, 2015.