I have been using Pledge for almost 40 years on old trains and have been very pleased with the results. I always try it first on a small inconspicuous place on the shell to make sure it does not harm it but to date , I have not had any issues. There was a time when there was only one Pledge formula so try to find the Original Formula if you decide to try it. It is certainly inexpensive to give a try and if you do not like it for trains, you can always polish the furniture!
Good luck,
Don