Auction 333-341 Western Australia & Great Britain - Day 3

1913/23: £ 1 grey-green & carmine, wmk. Multiple Crown CA, Colour Trial Plate Proof, an Imperforate example in issued colour, fresh and fine, numbered '4' in pencil on reverse, unmounted og. Just six examples are believed to have been printed thus and retained by De La Rue for their records and later sold through Robson Lowe.
Provenance: H.F. 'Johnny' Johnson.