Census of 1c Dark Ultramarine (Scott 192)

Notes:

Provenance:

05/03/1954, H.R. Harmer, “thin spot”
10/27/1965, Siegel Auction Galleries, The Max Simon Collection Part I of U.S. 19th and 20th Century Stamps & Plate Number Blocks, Sale 292, “small thin”
01/29/1980, Kelleher, “thin spots”
12/7/2004, Lake Shore Collection, Siegel Auction Galleries, The Lake Shore Collection, Sale 888, Lot 138, Realized $10,500, “small thin spot at top”
6/27/2017, Siegel Auction Galleries, 2017 Rarities of the World, Sale 1159, Lot 185, Realized $9,500

Certificates:

PF 4628 Genuine
PF 58456 (1954) Genuine with thin spots
PF 434480 (2006) IT IS GENUINE, WITH THIN SPOTS AT TOP LEFT, TOP RIGHT, AND BOTTOM LEFT CORNERS