Vintage Large Sterling Silver and Stone hotsell Mexican Turtle Brooch

This is a wonderful vintage sterling silver and I think agate stone Mexican brooch. It's a great size and measures 2 1/2" long x 1 1/2" wide, it's not small. The brooch is signed on the back 925 Mexico and 3 initials one is C and the other two I can't make out. It weighs 13 grams. It's a great looking vintage piece that I purchased on a buying trip to New Mexico. Please e-mail me with any questions? Buyer pays $5 shipping in USA. Please see my other listings.