Painting the Emblems

I'm finally to the point of finishing My tractor! I'm down to the emblems and am not sure how to procede? They seem to be made of embossed or stamped aluminum? The round oval badges that say "140" have a white backround with red raised letter. How do you strip the old paint off and prepare and prime surface for new? I know I have to handpaint the numbers but the backround is too large for brushing to look good? Also looks like raised edges should be bare and polished? The large emblems on hood that says MCCORMICK FARMALL are in better shape and only need to clean and repaint the red mccormick letters. Again the raised aluminum parts look like they should be polished! You fellows have always given good advice and it will be put to good use now also! I'm excited to be almost done, afraid of letdown to be done also! Can't wait to post photo of finished tractor! I've put a few photos on the site the last few months to keep everyone updated! I like to check on other peoples projects myself and hear the stories behind their projects also! here's a before photo with tractor split and clutch being replaced, and another photo with happy Father and almost done tractor sans sheetmetal!http://www.tractorshed.com/gallery/tphotos/a28500.jpg

Here's another try at posting pic!