For a look at a lot more older plates, see the tour of older plates.
In the course of searching for plates to photograph or plates for my collection, I occasionally come upon plates that are not current, but are actually still on vehicle.
Consequently, these pictures were taken in a variety of circumstances - in wrecking yards (or outside them; note the chain-link fence in one of the pictures below), in antique shops, on the wall in my cousin's garage, etc.
I'm hoping to expand this area to have more information about older plates.
There are a lot more older plates in the plate collections, or you can look at the tour of older plates.
Some of these plates even have modern tags on them:
The Occasional Use plates were phased out in the '80s, but here is a plate with modern tags.