Large WW1 General Service Brass Button Sweetheart Brooch

Its hard to put a date on this piece it may be as early as WW1 but is more likely WW2 era in date, constructed from one large and two small highly shined general service buttons, the large button is marked on the back fro Sutton of Birmingham, one small one is Smith and Wright of Birmingham and the other is unmarked. A good chunky brass pin holds them together and they are in super condition, it measures 2.25 inches long.