224 224 P. PROGRESSIVE DIE PROOF: BW #132DP(3)E in sepia-brown; design complete other than for some lines in the sky (State 3).Cat $20,000. Superb! Provenance: Arthur Gray Collection, October 2015, Lot 370.�������������������������������������������������������� $12,500–15,000 225 225 P. PROGRESSIVE DIE PROOF State 4 (Final): Shading of the Sky now Completed & some evidence of Strengthening of Diagonal Background Lines BW #132DP(4)C in bright green, endorsed “Appd/7 12 26” at lower-right, a few minor blemishes mostly on the reverse, Cat $20,000. Unique! Provenance: The Arthur Gray Collection, October 2015, Lot 371.�������������������������������������������������� $12,500–15,000 32