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.