These Banana Republic Beaded Belts come in a wide variety of colors and are the most commonly seen early pre-GAP item on eBay. They were sold into 1984 (top image is from an order form centerfold) but were first seen in 1982. Advertised as “an American Indian condiment for your khakis”, they remind me of similar mass-produced inexpensive yet “authentic” items found in a tourist trading post in the Southwest.
Robyn's fascination with Banana Republic began in 1984 when her Alaskan adventurer father began buying the clothing and giving her the catalogs. She loved the clothes and as an artist she was drawn to the illustrations. She went on to study illustration at art college in BR's hometown of San Francisco and worked for years as a background artist for animation. She is now based in Oakland, CA as a graphic designer and illustrator with Secret Fan Base . She's been collecting and archiving at Abandoned Republic since 2011. 
Newly Updated! 1985-1988 Available.
Here’s a turquoise one from Poshmark; have not seen this color combo before:
https://poshmark.com/listing/VTG-80s-Banana-Republic-Safari-Beaded-Leather-Belt-5f7f68f5a4de41bf8627d4ee