The Vegas strip is completed onstage with a mini-model of the famous 'Welcome to Las Vegas' sign. This sign was designed by Betty Willis in 1959.

Description:
The sign itself is a classic roadside pole design which faces North/South. It is double backed, internally lit with a border of yellow incandescent bulbs along the flat edge of its width. Across the top of the sign seven white neon circles house separate red neon letters which form the word welcome. Crowning the sign at the very peak, above the word welcome, is a seven pointed neon star comprised of orange and yellow neon. The cabinet itself is faced with translucent white plastic and treated with blue and red painted text. The South side of the sign reads with the Neon welcome word then in blue painted text "To Fabulous" in a 50's style text reminiscent of that used in the Last Frontier property, and cursive. The Words "Las Vegas" are spelled in all caps, in red block text. And below that in smaller blue text the word "Nevada" are spelled in all caps block text.
taken from: http://gaming.unlv.edu/v_museum/neon_survey/surveys/fabulous_las_vegas.html