Examples of intermetallics through history include:
# Roman yellow brass, CuZn
# Chinese high tin bronze, CuSn
# Type metal, SbSn
# Chinese white copper, CuNi 
German type metal is described as breaking like glass, not bending, softer than copper but more fusible than lead. The chemical formula does not agree with the one above; however, the properties match with an intermetallic compound or an alloy of one.