The picture shows a view of this Old NewYork City Advertising Souvenir Trivet Plaque. This plaque is not dated but it is old. The maker and the material it is made of are unknown. There are detailed raised images. On the back there are four short feet to raise it of the surface. It is marked as follows:
NEWYORK CITY STATUE OF LIBERTY EMPIRE STATE ROCKEFELLER CENTER
This plaque measures about 4-3/8'' x 3-1/4''. It appears to be in near mint condition as pictured.