Postby dognose » Tue Aug 19, 2014 7:04 am
Hi Julian,
I have to ask the question as why you want to do such a thing? If the items have age to them, then a modern hallmark would be a defacement of them.
If you sent your Indian beer mugs to the London office and they failed the assay (many of the older Indian pieces were made out of Indian coins, which were just below sterling), the assay office will take a hammer to the pieces before returning them to you, and I believe you will still be liable for the cost of assay.
If you need assurance that your items are indeed up to a certain standard, then there are private assaying firms that will provide you with a written report to accompany the items.
As a side-note, it would be good to record your mark here. Are you a silversmith?
Trev.