The pictures of B12s in RCTS part 2B suggest that LNER livery may have been inconsistent in this respect. The picture of 8573 at Cromer in 1934 in the condition modelled by Hornby appears to show green axle ends and wheel bosses, but it is possible this effect is created by weathering and the vagaries of black and white photography. Other pictures show both black and green axle ends.