Birds 30c Gum Arabic wmk inverted lower right corner Plate block of four, tone spots on reverse [US1] (Start Price = £8.00)

Birds $5 unmounted mint, tone stain on gum, showing dot over 'Y' [US1] (Start Price = £22.40)

Birds 25c block of four inverted wmk, also top right corner pair with doctor blade flaw mint, tone spots on gum [US1] (Start Price = £15.20)

Birds 25c lower right corner strip of three unmounted mint, toned gum, showing 1mm downwards shift of black, possibly unique as a Plate strip [US1] (Start Price = £75.20) (Image)