Cloisonne aging and country of origin

[hoogenbosch67]

Hello,

I have 2 very nice cloisonne pots and 1 bottle. The botttle is chinese but from the pots I can not determine anything. How can you detemine age an origin.

Attached photos

[hoogenbosch67]

photos pot2

[hoogenbosch67]

Bottle photos. Little damage on rim

[hoogenbosch67]

Damage photo of rim and Bottoms of other cloisonnes

[Stan]

This is Chinese cloisonn?, That is about all I can tell you, this site as far as I know talks about antique porcelain the main page is for Chinese Antique Porcelain and then the other is  for other asian ceramics, it looks to me to be early 20th century but I am limited in my knowledge of cloisonn?.