When was first golden spike Winchester made?

The first golden spike, known as the "Golden Spike," was driven on May 10, 1869, at Promontory Summit in Utah, marking the completion of the First Transcontinental Railroad in the United States. However, Winchester, as a term, does not specifically relate to the golden spike event. If you meant a different context for "golden spike" in relation to Winchester, please clarify for further assistance.