Watch List notes:

The Milton Collection, East Africa, George V, AR 50-cents – half-shilling (2), 1922, 1923, reduced size, crowned bust of George V left, by Bertram MacKennal, rev. lion to r., above value and date (KM 20), second with lustre, certified and graded, first by CGS as Uncirculated 80, second by NGC as Mint State 63 (2)
(70-90 GBP)