JWB Hallmark information required

Hi, we have had donated to the Glasgow Hospice, a dressing table set, art deco design, with the hallmarks of

W (ie J over W , large B) with then lion rampant, the Chester sword in middle of 3 wheat sheaves and then a curly C.

I have established that this refers to Chester silver, but unsure iof maker, year, and potential value that we could raise for the Hospice.

Can anyone shed any light on this please?

Many thanks for your assistance.