Æ, 38.3mm diameter, weight 27.46 gm.  No legend, their conjoined heads right. J.MOORE F. 1871 below.  Rv. JAMES WATT & Co. / LATE / BOULTON & WATT / ENGINEERS /  LONDON. & SOHO / BIRMINGHAM   Eimer 1617, BHM 2922. Davis 1241.  Numerous deliberate knocks and nicks right round the circumference, dark brown toning, otherwise Very Fine.