Thank you all for your help.
I have now found out that the furniture piece(s) are very valuable but need
to be restored. Some of the fittings are to be replaced. The enquirer has
accepted that the silicon is extraneous and has now found some modern leaded
alpha brass quite close to the original.
He was also enquiring about pewter. I knew the answer to his queery but
through the Pewter Society he has found someone to supply pewter to the
antique composition (Sn/Pb/Cu) needed for some other fittings.
Thanks to you all a satisfied customer.
Peter
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