I am looking at buying a used BGE. The top ig not spring loaded, it has a hinge on the back and folding arms on the side. The handle for the top is not solidly attached but it pivots on a rod. It is green in color and the top cap is marked Big Green Egg. Would anyone know about how old it might be and if it is ceramic or clay. The owner got it from another person and it has only been used 3 times.