Vintage Deadstock Lilli Ann Button Down

Found in San Francisco. Based on the clothing tag and input from my mom, this shirt looks like it's from the 70s, possibly early 80s. Size 8 but keep in mind that vintage clothing is smaller than today's clothing. Fits like a 4-6 or a S. For reference, mannequin is a women's size XS-S. According to vintagefashionguild.org, Lilli Ann was started in San Francisco in 1933 by Adolph Schuman and was named after his wife, Lillian. The company was sold in the 1990s, and was closed by 2000.