PL.17 (ML)(SPEC C6) ON COVER/HEAVITREE UDC (DEVON). Fine mourning envelope Exeter to London with a good to fine die 2 1d pl.17 lettered ML L.C.14 (spec C6), several shorter perforations and tied "285" of Exeter. On reverse EXETER date stamp FE 14 1855 and fine strike HEAVITREE udc in red-brown. (Ref 107694).