A pictorial postmarker at a temporary post office provided for the First Pacific Congress of Psychiatry held in Melbourne between 12th and 16th May, 1975, was used to process 3,259 articles, including 16 registered.
Details
- Date: 12 May 1975 – 16 May 1975
- Quantity: 3,259 articles
- 3,243 (ordinary)
- 16 (registered)