How can i remove these stains?

I just bought this at auction, do you think the yellow marks are part of the painting? it looks like a stain to me but i noticed in the bottom section under the flower it is there as well? just looks like a stain, but i am by no means an expert.

 

Try baking soda with hydrogen peroxide to a paste texture. Apply with patience, care and love to the affected area. Observe if stain fades, then work affected area till stain disappear.

 

i just noticed in the bottom right, beneath the flowers it has the same yellow. starting to think its part of the design..looks odd..but its underglaze.

 

Take a very close, harsh, and critical look at the glaze where those yellow patches are. If it's stain you should find glaze flaws, crazing or pinholes or like that.

If it is stain, it will be something that got through the glaze and into the ceramic underneath, so it will appear underglaze.

 

I was thinking it has to be a stain because it doesn't look right..other than that hairline, i cant see any crazing, flaws or pinholes.. i really was hoping to, because the design on this is beautiful, then you have yellow clouds? lol... i think i have some peroxide will try that, but nothing has budged it so far and i am afraid to scratch the glaze.. not very familiar with porcelain and stains, but i loved it and got such a good price on it. I think its Kutani Tsukuru.

 

will the peroxide affect the painting there is paint over glaze and of course under..?

 

The solution of baking soda and regular hydrogen peroxide is a safe cleaning solution for the porcelain. Use handgloves. Try it with any porcelain that needs cleaning. Dip sponge with the prepared cup of the mixture and scrub clean with care. Do not drop your porcelain - just clean it with smile. If it does not work then goto to this weblink for further delicate matters regarding pottery/porcelain cleaning:
http://www.lakesidepottery.com/Page...nes-and-stains-from-porcelain-and-pottery.htm
It describes detailed procedures for care and cautions for eliminating stubborn stains and discoloration for antiques.

 

thank you nokita!

 

maybe it was used as an ashtray ...and those are burn marks..?

 

Grew up in the 50's, when everyone smoked, and many things got burn marks, and that is just what they looked like.

 

Yep!

 

Hi,
Try rubbing alcohol or just clear vodka.
greg