Claude
The colorful cachet by Doris Gold features a portrait of Joseph Priestley in the center flanked by yellow panels depicting scientific instruments (a rifle-like apparatus and a lamp/optical device on a tripod). Below is an illustration of his stone house in Northumberland, PA, with figures conducting experiments at a table in the foreground. The stamp is a USA 20-cent brown-toned engraved portrait of Joseph Priestley, tied by a machine cancel reading 'NORTHUMBERLAND, PA / APR 13 / 1983 / 17857' with a 'FIRST DAY OF ISSUE' slogan cancel to the right.
Mistral
This First Day Cover features a vibrant cachet with a central portrait of Joseph Priestley in blue and white, flanked by yellow panels showing a scientific instrument and a laboratory setup. Below the portrait is a depiction of Priestley's stone house in Northumberland, PA, with figures conducting experiments at a table. The 20-cent stamp on the right displays a brown portrait of Joseph Priestley with the text 'USA 20c' and 'Joseph Priestley.' The postmark is circular and black, dated April 13, 1983, from Northumberland, PA. The cover is in excellent condition with clear, legible text.
(The automatic summaries sometimes misidentify the postmark as part of the cachet artwork.)
