SG188 with "colour spot below base frame right of E of POSTAGE" (BW198f)

SG188 with "colour in last white border segment at top" (BW198i)

SG204 block of 4 with freak ink smudge on two units

SG206 with "line prolonged under AGE of Postage" (BW230e). This example shows the line extended under the whole of POSTAGE