I have one and could not find out much info on it. They are fairly rare and could be purchased from aftermarket suppliers such as Western Auto, PEP Boys ETC. The little I have found out was that it didn't become available until the '50s and was something like $10 or $12 so not many people wanted to spend that kind of money on a car that was several years old. I have several aftermarket dress up hood ornaments for the '46. Two versions of the "Goddess of Speed", one with her arms outstretched, holding a wheel and one version with her arms along side of her. These came in four colors, clear, red, green and blue. I have all but the green. I also have one that looks very much like the Buick, "torpedo" and another that is in the shape of a lightening bolt, in red. At one time I was putting a different one on my car every month or so but stopped doing it. I now keep the Red, "Goddess of Speed" on my car because the red matches the red accents on the '46. If you learn anything about them please post what you learn. Some day I'll get my Daughter In Law to try to figure out how to post pictures and I'll do so.