Trifari Enamel Flower Brooch

Have you ever found an unsigned Trifari? Not an everyday item as Trifari was so careful to hallmark their work. I didn't think this brooch was Trifari when I bought it. I just thought I loved those enamel florals of the 1930s. But when I was scrolling through the Trifari jewelry patents I did a double take at patent number 115,127 dated June 6, 1939. I think that's what this is. Even the tiny rhinestones on the stems are in the correct places. There are no markings on the back at all. Just a simple pin. What do think, is it Trifari?