Reproduction?

[rgomes10]

Hello!
I would like some help, please, with this brush washer. I´m not sure if it is authentic or its period.
Thank very much.
Best regards,
Regina

[peterp]

Hi Regina,

I rendered the label invisible. You do not want to have others know the source if it should be authentic, when it comes to this class of item.
If authentic, then this would be a Southern Song Guan kiln washer - an imperial item. Guan was the first kiln established by the palace and it produced exclusively for the court.
If this is not authentic, then it is a very high level fake.
This shows a similar one in the National Palace Museum in Taipei: tinyurl.com/2574paeh
Please note that not all Guan wares have this bluish hue; many of those in the imperial collection show a more whitish or light gray glaze. and many have more crackles than this item.

I'm afraid such an item cannot be correctly evaluated via pictures, you need to find either a specialist on such items for a hands-on inspection, or a scientific authentication would be required. But, unfortunately I have to to tell you from experience that museum specialists not necessarily can tell for sure either. Guan wares are just too rare.
You are probably aware that such an item at auction would go very high, if authentic, possibly into the six digits.

This said, the age signs of this look natural, the brown clay is a bit lighter than others of this kind, but should still be all right. Again, a very high quality fake may look that way too.

[rgomes10]

Hello, Peter!
Thank you for your answer. The age signs are threre, but it is really dificult to tell.
Best regards,
Regina