Very RARE or OOAK? Piccardie - Bullecourt WWI battle spoon?

This spoon has me stumped. The top is Picardie and a coat of arms I think. In the bowl is "Bullecourt". It has french marks on the back of two diamonds. Another unknown mark that is almost stamped through the bowl. These two town are in France and the only correlation I can find is that they were both involved in famous battle. I have heard there was a time when spoons were made for wives that returned to the battle scene of their husbands as a souvenire. Anyone have any input for me?
Thank you.