Postby dognose » Tue Apr 09, 2013 5:04 pm
Hi,
This Birmingham letter series always causes problems. I would go for 'x' for 1897 on the strength that Edwin Alfred Marsh, the maker of your piece, entered a similar mark with the Chester Assay Office on the 17th December 1898. I'm unaware of the date of his Birmingham registration, but as it was a popular choice of the Birmingham jewellers to have their better pieces assayed at Chester, it may not have been too much earlier.
Trev.