According to saving.org, 111.42. According to http://www.earlytelevision.org/color.html a 21" color tv in 1955 was $755 1955 dollars... or more than 6 iPhones.
This site seems to have more prices of goods http://fiftiesweb.com/pop/prices-1957/
A cheap ford car was $1879 or 17 iPhones.
Kinda holds as a cheap ford today is around 14k