I have the entire cabinet apart - except for the section with the dial face, speaker and grill. The speed nuts have be befuddled a bit. Got to make sure I can find replacements before i take them off - they look like they don't come off very easy and probably are destroyed in the process. I would at least like to remove the speaker so It doesn't get wet in the cleaning process.
. Any tips on cleaning the grill.
I would strongly suggest NOT trying to remove the speed nuts/spring clips that hold the chassis together. The posts that holds on the acrylic dial glass will almost certainly break off in the attempt. In many cases they have broken themselves off already. You have a chance to get the speaker loose because that's on aluminum posts, but the operation was very iffy when I tried it. i would suggest cleaning it with Sprayway and Mr Clean Magic Eraser (just barely damp) before trying to take the whole thing apart.
If the dial glass posts do break off, use epoxy putty to along the top and on the ledge above the grill on the bottom to hold it.
BTW, the grill and trim are prone to coming loose and rattling when you play it. The construction of the bottom and front of the radio is a single piece of aluminum. Then there is a cardboard or heavy fish paper damper that covers most of the front with a large hole in front of the speaker. On top of that is the mesh grill. The rattles tend to happen when the front of the case, the fish paper, and grill separate a bit and then rattle back and forth. That has been a problem with many of my 1000/3000 and even the 7000. I took one 3000 down to bare metal, which is why I know how easy it is to break the plastic parts when trying to remove the speed nuts. I reassembled it by gluing the fish paper firmly to the case with contact cement, then the grill to the fish paper with a LIGHT coat of spray contact cement (3M77). It's not coming apart any more, but it doesn't rattle. That one also has the dial glass glued in for all eternity.
I would also like to repaint the lettering - seems it will take a very very fine brush. The brass has cleaned up nicely but the lettering is not as bold as it was 52 years ago. I think the brass was probably lacquered originally.
I would try a black lacquer stick, myself. You just rub it across the depressions where the letters are, and it peels off into the holes. Then wipe off any that has gotten on the flat surface. An alternative that you can probably find is to use black acrylic model paint (water-based). Just paint it into the hole with a relatively small brush but don't worry about getting it on the surface, then clean up the excess with a dry rag once it has set for a few minutes. In either case you don't have to worry too much about getting into the depressed letter perfectly.