Vintage 10K Gold ΔΚΓ Delta Kappa Gamma Female Educator Society Pin Brooch

In good vintage condition.
There are minor scratches.
Approximately 1 2/8" and 1/2" across.
Engraved on the back: "BI-486 5-11-29"
Marked: B 10K.
Weight: 3.9g.
Please review picture.