Signa-Craft and other manufacturers like Curtis, Taylor Locks, and Mr. Key also produced keys for many 1950’s-1970’s makes and models known as “Crest Keys”.
These were car keys that featured an enameled rendition of the auto manufacturer’s logo on the bow and were plated in 14k gold.
During the early 1960s, these special keys became so popular that oil companies like Mobil, Texaco, and Union 76 began issuing their own versions as promotional items for their customers. Today, these early keys are also highly sought after by collectors.