100% Authentic and spot on in all aspects of his more simplistic examples on autograph album pages and in person signatures. You can find a ton of examples that compare with this one perfectly online. Like most entertainers his autograph could be flamboyant or simplistic. You can compare hundreds of his signatures online. The album page on the PSA website is a perfect example of his more simplistic signature.
https://www.psacard.com/autographfac...w-c-fields/229