This is the only eastbound assurance sign in which the
'A' is smaller than the '3'. It also only happens once westbound. The rest
of the signs have the 'A' the same size as the '3'.
Sidebar: prior to the existance of any limited-access highways in
this quadrant of Oklahoma City, in Yon Olden Days when Route 66 was still
a fairly-important US highway, OK-3A was known as OK-66A as recently as
1972.
Pictures taken 5 January 2003.