1938, 30¢ Presidential, deep blue shade, top left corner margin plate number "22164" block of four, well centered, o.g., never hinged, Very Fine. Scott No. 830b  $1,200. A DESIRABLE PLATE BLOCK OF THE 30¢ PREXIE IN THE RARE DEEP BLUE SHADE. All examples of the deep blue shade come from plate 22164. This lot is accompanied by upper left plate "22164" block of four in normal shade and some pertaining documents and research. The ink is apparently slightly aniline and they should be slightly blue back. $0 (Image)

1938, 30¢ Presidential, deep blue shade, well centered block of four with distinctive color, o.g., never hinged, Very Fine and scarce. Scott No. 830b  $960 as four singles. $0 (Image)

1938, 30¢ Presidential, deep blue shade, block of three with partial town cds cancels, well centered, deep intense blue shade with strong aniline ink showing through to back; flaws including some creasing and left two with slight abrasion, Very Fine appearance, exceptionally rare used examples, unpriced in Scott and we have not seen any others offered. Scott No. 830b  Estimate $400 - 600. $0 (Image)