4pc Vintage 1980 Artmaster Indian Masks First Day of Issue Covers Spokane WA

Set of four vintage Artmaster First Day of Issue covers from the 1980 Indian Art Folk Art Series. These envelopes feature Pacific North Coast Indian Masks with unique 15-cent stamps representing the Tlingit, Chilkat Tlingit, Bella Coola, and Heiltsuk Bella Bella tribes. Each includes a detailed black and white cachet illustration and is postmarked Spokane, WA, September 25, 1980.  Type: First Day Cover Series: Folk Art Series Indian Art Year: 1980 Postmark Date: September 25, 1980 Location: Spokane, WA Quantity: 4 Envelopes Stamp Value: 15 Cents Brand: Artmaster Subject: Pacific North Coast Indian Masks Tribes: Tlingit, Bella Coola, Heiltsuk Material: Paper Era: 1980s  Keywords: Philately, Stamp Collecting, Native American Art, Pacific Northwest, Indigenous Culture, Tribal Masks, Vintage Stationery, FDC, Postal History, 1980s Collectibles, Artmaster Cachet, Folk Art, Americana