Coin silver dinner forks, Oval thread, N. Harding

These 7 1/2" dinner forks are in great condition. There is no tine wear or bends or dents. The unusual thing about them is the engraving on the front. It looks like a curved horn with tassels and the number 6 in the middle. On the back there looks to be a ribbon. Maybe fire station # 6 or lodge # 6 ? They are marked "N Harding" & "Pure coin". These are very nice forks.