1D GREY-BLACK PL.3 (SG3)(QI) ON COVER SOUTHWOLD TO HALESWORTH/"SOUTHWOLD PENNY POST" (SK311). Envelope Southwold to Halesworth with 1d grey-black (SG3) pl.3 lettered QI, touched at foot, tied fine strike black M.C. of Southwold. On front very fine strike "Southwold/Penny Post" hand stamp in black (SK311), filing fold clear of stamp. Within fine banker's imprint reference Harveys and Hudsons of Southwold dated 24 May 1841. Ex Tom Slemons exhibit, he recorded 322 1d blacks used on cover in Suffolk with 30 from pl.3. (Ref 113381).