The $64,000 Question

"What is it?" As soon as I can find my notes for this roll, I'll let you know. Until then, I haven't the foggiest notion of what it was, other than that it was photographed close up and out of focus like this intentionally. I left part of the film edge in the photo because I thought the grooves at the top left of the frame looked interesting.

Camera: Kodak 35 RF rangefinder (made in 1948)
Lens: Kodak Anastar 50mm, f/3.5
Film: Kodak Kodacolor, 100 ASA 35mm
Aperture: ? (I haven't found my notes for this roll, yet.
Shutter speed: ?
Exposure mode: Manual (of course!)
Date: 1976
Location: Norris City, Illinois, U.S.A.
Age of photographer: 15

First Roll 12if