need help to ID mark on Silver Jewelry

[miss-information]

Hello, would appreciate any help in ID'ing the mark on this brooches. I am guessing it is a Navajo artist.

Link is to detailed photos.

Sterling silver, onyx and tiger eye. Large brooches. 3" wide x 1.2 " tall.  Well made, nice stones. Probably from around 1980s.

Thanks!

https://photos.app.goo.gl/9tXc78Cjmvq1VcFN9 

[innormaltime]

It looks similar to an early Native American Hallmark for Sam Lovato. Good Luck!