Dear Trev, thank you for your help. I managed to do it with the site you linked on your answer. Here it goes right now the image. I didn't know if I had to create another post or not. But since you didn't close this thread I post it here.
Again it is a matchbox, marked with two marks. one is not visible, but the other has something that it appears to be an animal on top of an anvil or two letters.
I have been searching for several catalogues, and auction results, but neither gives me results of french matchboxes with dragons. It's known they had several pieces of jewellery with fantastic creatures, but in matchboxes not really. I can find several models with animals though.
Thanks in advance.