It might be a knob 6, but T4 or T5? 
Posted 06/10/2011 7:09 pm
It gets tough.
The inner ear points to a T5. The T4 is more of D shape
And the top left leaf points slightly below the I in DEI on the T4. And the one above seems to point at the base like a T5.
But, the bump on the back of the the bun toward the top is more like a T4.
But, IMO, it is a 1886 T5 Knob L6.
