Æ, 32mm diameter, weight 13.26 grams.  IBM TRADING SYSTEMS· RDX II·  THE INFORMATION ADVANTAGE·  Androgynous head right.  Rv. IBM TRADING SYSTEMS· RDX II·  THE INFORMATION ADVANTAGE· Computer keyboard and two screens.  Edge milled: ||||||.   Small stains on reverse, otherwise Good EF with some original colour and lustre.

An interesting advertising piece from the mid-1960s relatng to stock market trading.