By putting a return address you would probably be implying an intent to do business with the other party. If I'm sending registered mail I send their letter back along with it. It was sent to the wrong address as there is no MR. O BRIEN here...
Printed copy · Anthology Volume 3, page 1228Printed copy from The Tender For Law Anthology, Volume 3, page 1228 (printed 13 June 2014). Added by this site; not part of the Facebook export.