From 13th to 18th May, 1976, a special postmarker was used to cancel 921 articles, including seven registered, at a temporary post office provided at the Wentworth Hotel, Sydney, for the Toastmasters Downunder 1976 Conference.
Details
- Date: 13 May 1976 – 18 May 1976
- Quantity: 921 articles
- 914 (ordinary)
- 7 (registered)