Swaziland Revenues 1970 Complete Imperf Colour Proof Sheets

REVENUES: 1970-77 2c,5c,10c,25c,50c,R1,R2 and R10: The eight values (including the lovely R10 value unlisted by Barefoot & Hall) each in COMPLETE IMPERF COLOUR PROOF SHEET of fifty. On gummed watermarked paper each handstamped in violet at base "COLOUR APPROVED DUBLIN" (the Revenue Commissioners in Dublin would have been the designated supervisory body) with manuscript signature, endorsements including dating "2/9/70". A wonderful archival group, probably the sole surviving such examples. Rare & exceptional