The easiest and safest way to clean the original finish is with Wood Elixir...wipe on...wipe off. If you did want to repaint it, apply a coat of shellac first and then it can be repainted with any type of paint.
--Previous Message-- : I have a 1930's wall clock that has the : original green paint on it with colorful : designs in red and yellow. It has not had : any care and has hung in a house with oil : and coal heat. How can I clean this : residue without harming the existing paint : and also, if I were to repaint it, what : paint should I use? :