Baking soda to clean.

[Archon]

Hi can baking soda in vinegar be used to clean greek bronzes without damaging patina?

[v-drome]

Short answer, No.  Long answer, Nooooooooo.  But first we need to see the coin.  

(Also, even distilled water can damage certain patinas since it may absorb carbon
dioxide from the air and become slightly acidic.  The question is whether there is a good
patina to begin with, or just a layer of corrosion, and/or just some loose dirt.)

Regards, V-drome

[areich]

There is really no easy way to clean patinated Greek coins, especially not chemically. Mechanical cleaning would probably be your best bet. To get any meaningful advice, post a decent picture of the coin in question. The quality of pictures you've been posting so far is not sufficient.

[SC]

Short answer, No.  Long answer, Nooooooooo.  

Hilarious!

I don't think baking soda and vinegar would serve any coin cleaning purpose.  Baking soda can be used for some bronze cleaning purposes and vinegar for some silver cleaning but never the twain shall meet, unless in an elementary school volcano project (with a bit of red paint powder added).

Shawn

[bruce61813]

Another short answer, it is a no-no to use acids on bronze or copper, the results are disgusting.

Bruce

[areich]

I wonder if we'll ever see a picture.