Hello Fernando, Yes I keep up on Mexican helmets. This one is for a general officer of the Porfiriato period circa 1905. The collectors here would want to see the interior as well. Your helmet and associated photo not to mention the Order of Guadalupe medal appear to be in untouched condition as if they had been put away and kept safely for over a century. The fact that you can identify the officer who wore the helmet is amazing. Having the box and the Paris manufacturer's stamp for the medal is just great. This is museum quality material. These officers lived in turbulent times from the Yaqui and Apache Wars on the northern frontier to the 1910 Revolution. Thank you for letting me see them. Porfirio Diaz (in the original postcard) invested in an entire industry of postcard production in an effort to create a national Mexican identity through distribution with the postal system. He got the idea from the success of the German empire in forging a new national identity by using the medium of paper and cardboard products - ephemera - to distribute and broadcast images of national monuments, art work, statuary, leading politicians, artists, authors, poets, allegorical images of culture heroes, muses waving flags etc. through its postal system. Its amazing how effective it really was. I have a collection of Porfiriato ephermera as well. I love the art work.