This screw-back collar pin tests 10k for the pin only, not the screw back. It has the 3 linked ovals in red, white and blue enamel. The top is a crown shape in red enamel with the top of a sheperd's crook and the top of a sword appearing at opposite sides of the crown.
This IOOF pin is in excellent, original condition and has a large screw-back marked The Victory Patented with prongs to secure the pin to the fabric. The front measures 3/8 x 7/16 inches.