Frontier

The New Frontier (formerly Last Frontier and The Frontier) was a hotel and casino on the Las Vegas Strip. It was the second resort that opened on the Las Vegas Strip and operated continuously from October 30, 1942 until it closed on July 16, 2007. The building was demolished on November 13, 2007. The resort had the distinction of hosting Elvis Presley's first Vegas appearance in 1956, and the final performance of The Supremes with Diana Ross as lead singer on January 14, 1970.

This pin is highly detailed and measures 2.25" tall. With two posts on the back for added security. 

Reference photos as always, thanks to vintagelasvegas.com