The perception of spurs attached to cowboy boots probably evokes clichéd images of cowboy boots and the Wild West, but many years ago the manufacturing of spurs was a respected art form, and one which was very much in demand. It was also common for the wearers to request custom styles and designs, making it difficult to identify one brand from another -- so manufacturers generally made sure there was a way to know. Crockett was one of the most storied spurs manufacturers and they generally made sure it was possible to tell if you had a Crockett spur.
Examine your spur carefully for the name “CROCKETT.” It was common for manufacturers to make sure their spurs bore their name or initials, and spurs made by the Crockett Spurs Company were marked with the name “CROCKETT.”
Look for the initials “CR” engraved in the spur. Once Crockett had been bought by a larger company owned by Jim Renalde, their spurs were marked with the initials CR, which stood for "Crockett Renalde."
Eliminate an alternative. If you are still struggling to be sure who manufactured a spur then it is possible to narrow down the possibilities and see if you are still left with Crockett. For example, if your spur is not marked with an anchor then it cannot be by Judd and Anchor, another prolific spurs manufacturer of the time.
Visit an expert if you are still struggling identify whether your spur is by Crockett. In truth, if it does not have a clear marking of “CROCKETT” or “CR” then it is probably not a genuine Crockett spur, but it is worth checking with an expert.