14K Gold Pave Diamond Blue Sapphire Pin Brooch - Hummingbird in Flight

Dating to the 1960s/1970s or so, may I offer this 14K Yellow Gold (tested, partially marked), diamond and blue sapphire pin/brooch in the shape of a hummingbird. The pin is a small size at 3/4" high x 1" wide. Weight is 4 grams. Diamonds number 14 and are fully faceted 1 pointers for a total weight of .14CT TW. Color is G-H and clarity is SI1-2. A single blue sapphire acts as the eye and it too is a fully faceted 1.5 pointer. Condition of the pin is wonderful however there are a couple test marks to the reverse of the pin (not by me, honest) and it looks like they did the marks in the area of the gold content hallmark (stupid them). There is a makers mark on the piece, a single letter M - an unknown maker to me. Safety catch closure to hold the pinstem in place. Just an absolutely gorgeous pin despite its small size. I doubt any lady would turn her nose up at this beauty! 7824RV/ws4778R/J-Y