I just got this really nice PAM 382 from a great fellow member astonjenks. This one had a movement overhaul with the addition of an ETA mainspring. As you can see from the photos the watch had a lot of patina, with a fair amount of bluish buildup. Nothing wrong with that, I just wanted to bring it back a bit and let it re-patinize in my climate.
I did a lot of reading about patina reversal, including the use of acetone, which in my estimation is very dangerous. The fumes are toxic, acetone is very, very flammable and it removes all paint!!Safer methods are readily available. This includes catsup, vinegar( which is a component of catsup) clear soda, baking soda and finally lemon juice. I chose lemon juice ( freshly squeezed from my backyard lemon tree) I read and article on a gen forum about using lemon juice, which recommended submerging the watch in lemon juice for 10 minutes. After 10 minutes, take it out, rinse it off and if desired polish it with something like Cape Cod cloth. This according to the above mentioned website. I would not recommend using a Cape Cod on a PAM Bronzo, as the watch new is not polished, but matte finished. I don’t want mine to look like a shiny rose gold dress watch.
As you can see from the photos, this method doesn’t restore the watch to a “ brand new, fresh out the box” look, but more like an early stage patina.
Here are the photos, before and after.
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The “after” photo is somewhat misleading. It looks very pink however this is lighting, not actual color. Better photo. Sent from my iPad using Tapatalk