Vtg USC College Double Keychain TD-40 Sterling Silver 925 Mexico Screw Box Clasp

Vtg USC College Double Keychain TD-40 Sterling Silver 925 Mexico Screw Box Clasp Screw lock on both sides Open box clasp on one side 24 g Estate sale purchase. Original owner was an USC alumni and donor. Keychain was new in plastic package but removed for photos. Keychain has age wear/tarnish. Item was cleaned with polish. Please see photos for details and measurements. There are three available for sell but this listing is for one.