Vintage Silver Cuff Links from Mexico

These vintage silver cuff links were purchased in Mexico. They are signed and still have the Mexican silver tag. I have not been able to determine the artist, but it looks like they might be stamped Oaxaca. My mother-in-law was a travel agent, and I believe these were purchased during her travels. These are early pieces likely dating to sometime in the 1950s or 60s. They are in very good condition and don't appear to ever have been used since the tag was never removed. It's not clear if these were purchased for her or her husband since their son (my husband) recalls a time when cuff links were popular with women and worn with blouses having French cuffs.