Elizabeth I (1558-1603), Milled coinage, Sixpence, 1562, mm. star, bust B, 3.02g/6h (Borden/Brown 23, O1/R1; N 2025/2; S 2594). Very fine £200-250

The reverse die appears to be Borden and Brown 1 but without the diagnostic misshapen m in adivtorem – perhaps struck before the die cracked or was damaged