A pictorial postmarker was used to cancel 1,479 articles, including six registered, at the temporary post office provided at the Sydney Hilton Hotel between 24th and 28th May, 1976, for the Seventh International Coal Preparation Conference.
Details
- Date: 24 May 1976 – 28 May 1976
- Quantity: 1,479 articles
- 1,473 (ordinary)
- 6 (registered)