Two die varieties exist for this type - Obverse 1 from the plastic set issue and Obverse 2 struck for circulation:
Obv 1 L at a bead, I of 'LIZ' to right of bead, 2nd A in 'GRATIA' to right of bead, + to right of bead;
Obv 2 L to right of bead, I of 'LIZ' to left of bead, 2nd A in 'GRATIA' to left of bead, + to left of bead.
Composition Copper-nickel (75% Cu, 25% Ni)
Weight 2.83g
Diameter 19.3mm
Thickness 1mm
Obverse
Young laureate bust of Queen Elizabeth II right, legend around.
Note: with 'BRITT:OMN'
Script: Latin
Lettering: + ELIZABETH II DEI GRATIA BRITT:OMN:REGINA
Unabridged legend: Elizabeth II Dei Gratia Britanniarum Omnium Regina
Translation: Elizabeth the Second by the Grace of God Queen of all the Britains
Engraver: Mary Gillick 
Reverse
Tudor rose, shamrock, thistle and leek aligned in a cross, legend above, denomination and date below.
Script: Latin
Lettering:
FID· DEF·
E.F C.T
SIX PENCE 1953
Unabridged legend: Fidei Defensatrix
Translation: Defender of the Faith
Engravers: Edgar Fuller, Cecil Thomas