Best to avoid anything with water...... de-grease with a spirit base, white spirit or the like, then use a metal cleaner.... tooth brushes etc in the nooks and crannies, then a little oil all over. Result? A good little plough.
The important thing with these little 043s is that they come complete with the depth-stop and the blade-clamp, which being loose, is often lost.
If you are not restrained by space under the fence, they have a more positive action with a wooden fence screwed to the metal one.
It comes with only three narrow blades, but If you have other Stanley/Record type ploughs with a 1/8 inch thick blade, typically up to a practical limit of about 1/2 to 5/8 inch wide can be used - you'll find the limit when they get hard to push, depending on your strength and the wood hardness.
Spare blades are available, unfortunately new, modern ones have a rectangular cross section, so tend to get a bit rigid in deep grooves.
Good luck.