Maker mark with extra dot has me stumped

Going through my collection i have found another maker mark that i cannot identify due to an additional dot before the first letter.
The date mark is Birmingham 1910 so you would think an easy find but i have found real difficulty matching Conjoined circles lozenge shape with .W.T inside.

There’s a “J” missing from the front, either through wear or a poor stamping:

James Walter Tiptaft of Northampton Street, Birmingham.


Hi Phil. Not doubting your knowledge but that it is a pretty poor stamping with the first circle looking like a fish tail & absolutely no letter . Do the hall marks really get that bad at times ?

Yes, they do - everybody has the occasional bad day!

Yeah for sure we all have those days now & then. Thanks again for you help.