Located in Oklahoma City on NW 39th St.(Route 66)
As mentioned in Jerry McClanahan's EZ66 Guide.
As he puts it,
WARNING! GIANT BOWLING PIN!
AND IT'S NEON!!!
Not exactly sure how long it's been around,
but the signage looks like it's been around
for a good 40-50 years. It's condition is unknown.
Updated: 7.12.07 It was heavily damaged in 1968 and was the last time the sign had any major work on it. Animation found on flickr.