1¢ Green 90UL28
We are not certain that this is the proper image for this position.
"Doubling of the left side of the frame from opposite leaf 3 to the top, of the horizontal lines in the lower left and upper left, of the outside of the oval band above leaf 3 in the lower left, and of the top of the frame above the top line of the upper spandrels; with marks in POSTA and below P"