1929-30, 29 mostly mint stamps (one - used, 20k with perforation 10 1/2), including complete set in blocks of four, including printing varieties on 28k in strip of three and in block of four, fresh condition, full OG, NH or LH/hinged, F/VF (Image)

1929, Iron Furnace, 20k green, perforation 10 1/2, bold color, intact perforation and nice centering for this difficult stamp, full OG, VLH, VF and scarce (Image)