Simichrome metal polish will have it shiny as a hiney !!

The advantage of using Bras-so on or any metal cleaning chemical it removes years of tarnish specially on brass allowing lettering to stand out. Now depending on the type of badge you have if it's brass Bras so will not hurt it, Now if its aluminum then you have to use none abrasive Chemicals and that is because on the aluminum badges 99% Of them are badges that are painted and so not to remove the paint you need to use a none abrasive such as Windex or a chrome cleaner. I have done numerous badges and in cleaning I have used a harsher chemical which is paste rough and the badges come out like New specially those that have raised lettering. Here you have examples of badges I have done in the past. Now keep in mind I did these over 6 year ago and still look very good

You can now wash the badge in some hot water with soap or detergent like dawn to remove the polish. Then the badge will begin to tarnish some like a more natural patina.

Mike

All those dents and creases you can remove them but it take time to do and lots of patients. You also can repaint the tan color that Ludwig used on their badges. It just takes time in spray painting, then shaving out the raised lettering and then baking the badge so that paint sticks to metal. If you do all this work it will look like it just came out the Ludwig Factory.

I've had decent lunch straightening badges by putting them between 2 wash clothes and then rolling them with baking rolling pin. It also gives it a slight curve to fit the shell.