At PostalAnnex+ in Long Beach, we take professional US passport photos, accepted by passport processing agencies. Most stores accept walk-in's, so no appointment is needed, but call the phone number at the top of the screen for your passport photo needs.
This silver sulphide tarnish can be quite easily removed using polishes that contain abrasives to rub off the silver sulphide, but these have the disadvantage of also removing small amounts of silver. Handily, chemistry provides a method which sidesteps this problem.
Nevertheless, there can come a time when its necessary to remove the paint, especially if the article is to be returned back to its original condition, with a varnished finish on it. There are two basic ways of removing paint; mechanically or chemically. Mechanically basically means sanding off the old paint.