1930, 4c blue Death of Bolivar unique proof sheet, imperforate, printer's security punches, without gum, bearing multiple Waterlow &
1930, 4c blue Death of Bolivar unique proof sheet, imperforate, printer's security punches, without gum, bearing multiple Waterlow & Sons Ltd. manuscript mark-ups and production notes, signed 10 August 1930, with numerous contemporary ink blotches, showing number 37554 at top and manuscript instruction at foot reading “Vignette plate correct. Lay straight with border.”, affixed at centre to cardboard backing, an exceptional and highly visual production piece of obvious exhibition value, very fine.