Australia Philately: 1968 International Soil Science Congress/World Medical Association Assembly

Details
  • Date of Issue: 6 August 1968
  • Withdrawn Date:
  • Invalidated: 
  • Designer: Robert Ingpen, Melbourne
  • Printer: Note Printing Branch, Reserve Bank of Australia
  • Process: Photogravure
  • Paper: Unwatermarked paper incorporating Derby luminescence
  • Watermark: None
  • Perf: 13.25 x 13.5 (comb)
  • Sheet: Printed in two panes of 50 stamps (R10 x 5) divided by vertical gutter.
  • Quantity: 
    • 5c – 9,983,5500
    • 5c – 10,128,500

The gutter lines, as a security measure, in blue (cyan) were somewhat thicker than usual and caused some difficulties with the doctor blade wiping of this area of the cylinder. The cyan cylinder subsequently developed a scratch and the new cylinder which it was decided to make carried thinner lines which proved more satisfactory.

Sheet Numbers (Thick lines)
Sheet Numbers (Thin lines)