Well, OK, so that's a bit of a stretch, but at night, when you shine a light on a 1964 Indiana license plate, you'll see the numbers glowing back at you.
For the first time since 1955, Indiana tried reflectivity again, this time coating the white characters with special glass beads in the paint. It worked out quite nicely and, based on what I've seen, lasts quite a long time.
After issuing plates with a small county number in 1963, the number was made full size in '64, with the letter (which, in these early years, denoted which license branch office issued the plate) made smaller.
This plate was issued in Spencer County by the Rockport license branch.