This coin is a continuation of the series of British West Africa shilling coins. Unlike the small denomination bronze coins though, it has a new design.
It was issued between 1959 and 1962 and was demonetised in 1973 with the introduction of Nigeria's decimal currency, the Naira.
Crowned bust of Queen ELIZABETH II facing right; around, QUEEN ELIZABETH THE SECOND; the artist's initials CT (for Cecil Thomas) incuse on the bust truncation.
||QUEEN ELIZABETH THE SECOND
Palm tree foliage dividing the date; around above, FEDERATION OF NIGERIA; around below, the denomination ONE SHILLING. The legend and the denomination are separated by two small "Stars of David".
The designer's initials, HP ([Thomas] Humphrey Paget) are under the date.
||FEDERATION OF NIGERIA ONE SHILLING [year]
References to additional information:
[Book] Remick, Jerome. 1971. The Guide Book and Catalogue of British Commonwealth Coins, pp 469-470.