Ooh, what a treasure trove! So many nice things. The old tins are great...I have some similar, full of metallic mix too!.
Fantastic find, Obscurity. Welcome to DP.
Some Dutch "uitlening" and on the banners at the demonstration, some French (the book, I think, though it's hard to make out individual words), a tin marked "De Spa et Fils, Verviers". I'm picking up strong Belgian vibes here. Am I getting warm?