German WW2 Kriegsmarine (Navy) Coastal Artillery badge produced by FLL 43. For whatever resaon these badges tend to maintain the gilding to the wreath very well but on the reverse tend to have what appears to be sloppy / excesive soldering. Pay particuar attention to the areas of Fine detail such as the waves and cannon as these areas are not easily falisfied.
A reproduction of the Silver CCC from FLL. Note the detailed images and compare extensively with the example you may have in hand.
Bronze IAB with maker mark FLL inside three circles. Note both the interesting Hinge mechanism on the combat badge as well as the stylization of the vertical components of the Manufacturers marking.