Thomond 1972 Helicopter 2s6d (Diamond shaped) with Royal Silver Wedding overprint doubled, surcharge10p and 12.5p plus a third 12.5p impressin applied obliquely, unmounted mint but some off-set
Thomond 1972 Helicopter 2s6d (Diamond shaped) with Royal Silver Wedding overprint doubled, surcharge10p and 12.5p plus a third 12.5p impressin applied obliquely, unmounted mint but some off-set