General

WCDB ID
306
Country
Flag: United Kingdom of Great Britain and Northern Ireland United Kingdom
Denomination
50 pence
Value
1⁄2 Pound sterling (GBP)
Dates
AD1998 - 2009

Physical

Shape
Reuleaux heptagon (7 curved sides), rotated π⁄7 radians
Mass
8.00 g
Diameter
27.30 mm
Thickness
1.78 mm
Composition
75% Cu, 25% Ni
Color
Gray / Black / Silver Gray / Black / Silver
Magnetic
No

Design

Orientation
Medallic: ↑ ↑
Edge
Plain/smooth
Tags
Crown / Coronet / Diadem / Tiara Ian Rank-Broadley Portrait of 70-Year-Old Elizabeth II Lion Branch / Ivy / Sprig / Vine Arrow / Spear / Trident Escutcheon / Shield Britannia Helmet

References

Wikipedia
Fifty pence (British coin)
Krause-Mischler
KM# 991
Numista
N# 864