Lot 30838 – 1921-27 1/2d green specialised collection mounted on five pages incl. die proof of the frame

1921-27 1/2d green specialised collection mounted on five pages, incl. 1926 “BEFORE HARDENING” die proof of the frame (ex Swarbrick and Vestey), mint plate blocks, several used showing progressive states of the “bow flaw” and a mint plate block of 15 and lower pane of 24 with different states of the flaw, and a strip of three with “SPECIMEN” ovpt and Madagascar UPU collection hs, a great little lot for the specialist.