I would take them to a consignment antiques shop.
And be aware that all "old Paris" is not created equal.

I happen to love Old Paris. I bought a vase from a decorator friend that is getting rid of all her old paris and going a little more modern. I bought a vase from here for $25.00 but that was what she payed for it. She has several big pieces that she was selling for $200.00, but again that was at cost.

I saw a vase at an antique shop last week that looked like mine and it was $55.00, but she sells her antiques at a much lower price than say Atlanta does.

A picture of my Old Paris...

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My vase was made around 1890, if that helps.