This is the first Walkman ad in history. Sony intended it to be a trendy product for consumers under 20 but it became popular regardless of demographics. The Walkman went on sale in 1979 at ¥33,000 which equates to roughly $500 today. Sales were predicted to be 5,000 per month but Sony sold upwards of 50,000 in the first two months of sales.
https://twitter.com/ClassicPixs/status/808070609745887233
http://www.minimallyminimal.com/blog/sony-walkman-tps-l2
origin - http://www.pipiscrew.com/?p=6371 1979-sony-introduced-the-first-walkman-tps-l2-in-japan