This is a vintage unmarked sterling silver bolo tie from older estate. The silver medallion is 2" by 1 3/8" and mounting with the picture agate stone is 3/4" by 5/8".  The black leather tie with tips is 19 1/2" from top to bottom one way. The sterling silver tips are 2 1/4".  Has fancy stamping and decades of black tarnish some folks prefer. Very nice bolo in nice condition. Thanks for looking.