Chinese Celadon and Red Patch Vase Impressed Mark

So I have been looking for this mark for a bit. I have looked at Gotheborg, they have an impressed mark section, but I don't see it. If nobody can ID the mark where else do I look? Vase is 13 1/4" tall.

 

I can only decipher two of the letters of the mark, the lower one on the right column, 正, and the lower one in the left column, 窯. The last one means "kiln", and the other one is part of the name of the kiln, but that does not help much. I think the vase is either rather modern Chinese or Japanese and somewhere in the 20th c. I tend towards modern Chinese, even if the letters are written in the old form. It might be an attempt to imitate Jun ware?

 

Thank you Mat.

 

Yes the style of crackle glaze looks VERY modern to me.

 

Thanks Antidiem.

 

Ah, now I see, the right column reads "鈞窯", Jun kiln. So some modern Chinese kiln producing Jun ware.

 

Thanks Mat!