We have 2 metal light switch covers vintage items.  They are both metal with a faux woodgrain finish.  1 is a double switch cover measuring about 4 1/2" square and the other is a single switch measuring about 4 1/2" x 2 3/4".    Side by side they are slightly different in woodgrain finish.  The single switch is a bit discolored on close inspection, it doesn't stand out on quick glance.  This one also has some rust on the back.

2 switch covers Metal woodgrain metal vintage