Fran?ois, That is one nice set!! I am envious! They look to be, actually worn pieces(collar tabs). John, Thank you for posting these great photos!! While the are not members of the Corps of Engineers(These are Construction Troops), they are very interesting! I would be interested in knowing if there is any writing on the reverse of the photographs as well. I will start a thread on the Construction Troops in the near future. Lets keep the conversation going... if you know of anyone who can make any additions, please ask them to join in! Regards Paul