Australia Philately: 1977 Silver Jubilee

Details

Date of Issue: 2 February 1977
Withdrawn Date:
Invalidated:
Designer: Australia Post Graphic Design Section
Printer:
- Norman J. Field, Melbourne
- Government Printer, Sydney
Process: Offset lithography
Press:
- Heidelberg press (2%)
- Komori Sprint press (98%)
Cylinders: (see below)
Paper: KP6T unwatermarked coated stamp paper incorporating Helecon
Watermark: None
Perf: 14 x14.75 (comb) on a Grover perforator machine
Sheet: Printed in four panes (R5 x 10) and guillotined into two panes, separated by a vertical gutter.
Quantity:
- 22,370,000 (18c)
- 5,070,000 (45c)

Approximarely 2% of the printing of both values was completed by the Government Printer, Sydney on a Heidelberg four-colour photo-litho press. It is believed all the stamps printed on this press were used for the souvenir stamp packs.

Colours in printing order were:

White – Silver – Process Magenta – Process Yellow (first pass) / Process Cyan – Reflex Blue – Black – and a varnish (second pass) (18c)
White – Silver – Process Magenta – Process Yellow (first pass) / Process Cyan – Warm Red – Black – and a varnish (second pass) (45c)

The other 98% were printed in Melbourne under the control of the Government Printer, by Norman J Field, on a Komori four-colour, photo-litho press. These stamps were used for general distribution to post offices and philatelic sales centres.

Colours in printing order were:

Silver – Process Magenta – Process Yellow – Process Cyan (first pass) / Reflex Blue – Black – and a varnish (second pass) (18c)
Silver – Process Magenta – Process Yellow – Process Cyan (first pass) / Warm Red – Black – and a varnish (second pass) (45c)

The densitometer for colour readings was produced by Gretagurga, Switzerland for both printings.