This shirt is not listed in the catalogue as far as I can tell. It’s a 100% cotton ventilated shirt with a Yukon style Henley collar.
Update: A Blue version with an attached price tag was discovered. Item number 1619 is not in the catalogues as far as I can tell.
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.
I used to have this shirt it was one of my favorite wintertime undershirts.