This is a plastic molded chip from Chaudfontaine.
I did not see at first an entered the other side on the chipguide.

Please feel free to answer these 3 questions.
1/ Do we have to put both sides on the chipguide? So you can see it's a plastic molded chip?
2/Any idea of timeperiod of this mold?
3/ Who could have been the manufacturer?

Thanks.