The lure in question was advertised in the April 1924 issue of Forest and Stream magazine as "The Celebrated GLIRR TRANSPARENT MINNOW SPINNER COSTS ONLY THIRTY-FIVE CENTS and will give you lasting fishing joy. The bait that becomes transparent under water and looks and acts like a real minnow." The lure was advertised by the Glirr Manufacturing Co., 250-40th Street, Brooklyn, N.Y. I have only found a single ad for this bait. The ad was about 2.5 x 5 inches with an artist rendition of the minnow.
I have searched for this lure for 15 years and have never seen another. I suspect the body was made of shark skin or other natural substance.
As I have a complete run of Forest & Stream advertisements I was able to pull the ad for this neat lure, which is run here.
Anyone who wants a cool UNID to be profiled, drop me a note! It really works.
-- Dr. Todd