| Country | United Kingdom |
|---|---|
| Queen | Elizabeth II (1952-date) |
| Type | Standard circulation coin |
| Year | 1977 |
| Value | 50 New Pence |
| Currency | Pound sterling (decimalized, 1971-date) |
| Composition | Copper-nickel |
| Weight | 13.5 g |
| Diameter | 30 mm |
| Thickness | 2.45 mm |
| Shape | Equilateral curve heptagon (7-sided) |
| Orientation | Medal alignment ↑↑ |
| Demonetized | 28-02-1998 |
| References Mintage | KM# 913, Sp# H1 49,536,000 |