1780 EL with albino ARDEE, Bishop and Dublin PP Receiver

1780 (circa, contents undated) Entire Letter to Castleknock with clear small albino ARDEE, charged 4d in the General Post, transfered to the Dublin Penny Post for delivery, charged raised to 5d.  The reverse shows a fine 22mm Dublin "Bishop" JU/20 (F/K 18), and a very fine strike of the scarce Dublin Penny Post JU20^M (F/K 162).
Fine and very clean.