Need help no clue what these hallmarks are

Hi please can anyone tell me about these spoons I have no clue where they are from or when

The marks show that your spoons were made by John Gilbert & Co in Birmingham probably some time around the end of the 19th or beginning of the 20th century. NS stands for nickel silver which is a base white metal alloy containing no silver at all. It is not known whether the other marks have any particular significance although it is possible that the “D” may be part of a private date-coding system peculiar to Gilbert & Co.

Phil