1922, King George V, blue black Thom overprint on 6p reddish purple, vertical pair, top stamp has accent over ''a'' inserted by hand, full OG, NH, VF and scarce, SG #60/60a, £853.75 as hinged (Image)

1922, King George V, blue black Thom overprint on 1s bister brown, right sheet margin block of six (2x3), right stamp in the middle has accent over ''a'' inserted by hand, full OG, NH (two stamps, including the error) or hinged, VF, SG #63/63b, £740++ (Image)

1923, King George V, blue black Harrison & Sons overprints on ½p-2p, coil stamps in vertical pairs, one stamp of each pair with tall serifed ''1'' variety, full OG, NH or hinged (top stamps), mostly VF, SG #67/70, a, £237 as hinged singles (Image)