Very old Japanese bowl? or new? Mount Fuji marking.

I recently picked up these two identical bowls. One has a chip out of it, but the other is flawless. They both have the same Mount Fuji marking on the bottom. The only thing that makes me think they might actually be very old, the rust spots. See the photos. I think those are rust spots. I'm wondering what timeframe, and possible value these may have. Any information would be much appreciated thank you.

 

gotheborg.com

 

Found this similar Fuji mark which Gotheborg indicates is unidentified.

 

I doubt these are "very old."

 

I doubt they are even ...old.........

and are of little value..

 

I didn’t think so either initially, then I saw the rust spots and thought/hoped I was wrong.

 

This mark was used by Fukagawa in the late 19th and early 20th century. There are also later copies, pics are too small to make any useful judgement.

 

Welcome Christina.

Those are imperfections in the clay, not a sign of age. Porcelain doesn't rust.

 

Nice bowl nonetheless!