Sweet little Scottish hallmarked brooch.

I have a new hand held polishing tool. It is ideal for fiddly jobs. I decided to try it out on this little brooch. It is not particlarly fashionable at the moment but I like it. This is before the polishing- I forgot to take a picture after. The hallmarks show:
Thistle - Scottish silver
Castle- hallmarked in Edinburgh.
Letter f - 1961
WBs - Ward brothers. They only used this mark in 1961, although they made jewellery before and after that.