I've had 460a, 480a, 481a and now have an SA100.
Those console pull amps are a great place to start but they're not in the same league as the SA100. The SA100 just does everything better.
Truth be told...I don't have the cage on either of my amps either, they get so hot.The badge on my SA-300-B is intact but I don't use the cage because I prefer her to be naked.
The badges would be quite easy to reproduce, there's nothing special about them (unless yours is missing.)
A Fisher badge sold on the bay a couple of years ago...I forgot how much but I think it was between $200-$300.