1985-1992 slightly smaller portrait;
1992-1997 slightly larger portrait;

Composition: Copper-nickel

Weight: 5g

Diameter: 21mm

Thickness: 1.7mm

Obverse

Second crowned portrait of HM Queen Elizabeth II facing right, wearing the Girls of Great Britain and Ireland tiara, legend around

Lettering: 
ELIZABETH II
D·G·REG·F·D·

Translation: 

Elizabeth the Second by the Grace of God Queen Defender of the Faith (Elizabeth II Dei Gratia Regina Fidei Defensatrix)

Engraver: 

Arnold Machin 

Reverse

Crowned Tudor rose dividing date and legend, denomination below

Lettering: 
TWENTY PENCE
19 93
W G
20

Engraver: 

William Maving Gardner