I pulled that off the top of a stack of my vintage stuff. I kind of remember the "Z" being broken, but not really certain. This is only one of my C= 64s. This is the style I had when I was a kid. I got one when I was in about 4th or 5th grade. I really enjoyed it, even though I didn't have any magnetic media, so I could only program until I turned it off.
I cleaned this one up a bit. First, with a can-o-air, then with a wipe-down. Here's the after shot:
I don't know if it works. I haven't tried it in a long time. If I do, I'll be sure and post details here.
Here's a couple more pictures of the Commodore 64:
The Commodore Key makes me nostalgic. I also included a closeup of the logo on the top left of the unit.
I think most of my hours with it though, might have been using the cartridge port on the left of this picture. It's games were comparable to (not compatible with) the Atari 2600 and used the same joysticks and paddles. I played a lot of "LeMans" (YouTube Video of LeMans) (The guy in the video was loading from floppy. I had a Cart for it.)
Will post more later.