Unknow craftman & Puiforcat sale

Good Day my Dear Friends

i bring to you this topic because i need some help:

first of all i have this silver Tray which have a seal but i cannot find any information of it
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Second i have this Jar, this doesn’t have any kind of seal i have searched everywhere i want to know who made it.
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and last i have this tea set of Jean E. Puiforcat
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my propose is to sell all these items if you know some one who wants to buy them please tell me

thanks