Historic Homesteads of Australia Collingrove- Pre Stamped Envelopes 1988.
Australia issued a set of Seven Pre-Stamped envelopes on 28 Sep 1988 on Historic Homesteads. All are 39c envelopes. PSE serial nos 150-156.
Collingrove: Angaston, South Australia – Collingrove was built for Philanthropist and pastoralist John Howard Angas and completed in 1854. It was built of micaceous slate quarried near the site.
Stamp Digest 