[Luke H]

Maybe there’s something obvious I’m missing here to cause all this confusion but...

This badge has 2 sets of hallmarks I can see.

1st - on the front of the star at 6 o’clock below the central device (circled in pic)
2nd - I presume to be on the raised side of the central device - hence they must be very small and this is probably the reason why they’re unclear.

I suspect the badge is made in 2 parts and this is the reason for 2 marks.

Both makers marks are clearly F&D LD. Same manufacturer.

The first set of marks shown in the second picture of the OP and this post are very clear. They show an anchor for Birmingham and a old English V - see the link posted by Millmead in post #5. The v matches the ‘example’ hallmark photographed on the silver hallmark website exactly, it too has a closed top.

Granted the second hallmark is somewhat unclear but given it’s same manufacturer, same outlines, roughly same letter shape etc I think it’s going to be the same date & assay office. That it’s rubbed and a poorer mark has proved to be a bit of a red herring in this thread.