Silver or Silverplate Spoons with Asian markings

I have 14 of these spoons. 7 have two sets of marks (pics 1 and 2) 7 have only one mark (pic 3). They are long like iced tea spoons at 8". I have no clue what language the marks are in which has kept me from finding out anything about them
The patterning on the handles feels like it was made with a tool like a stamp or chisel.
Other than the different marks, they are identical spoons.

 

It's Korean, and the one set of marks says plated 도금가곰기숱 - then there is the number 3 and 은백 (silver white)

 

NS is often for "nickel silver" upon which the plating is adhered. Not certain in this case, but entirely possible.

 

The design on the fork handles was made by a flat graver(wriggle engraving) and possibly a round graver.

 

Thank you. Wasn't much of an investment at 33 cents each!