Singer 128

[Pdm25150]

Hello peeps, Saturday i picked up a old  Singer 128. Well from what I see it is a model year 1924 by serial number. Portable unit and the wood case is in great shape.

My question for all you gurus is what to clean it with? Something that won't hurt the finish on machine.  The mechanical underside is can use solved on. The black finish and all the gold is what I'm worried about. 

It is not bad just has years of built up material fuzz,oil and dirt. Lady said it was her grandmother's. Got a real good deal on it.

No plans for leather sewing, maybe some light weight soft leather.  Have always wanted one and been watching this one for awhile.  Had a not going to sell price for awhile. Finally they came down to reality. So figured I'd ask here for something to clean it with and not hurt the finish. Thanks for the help.