Thank you for viewing! This appears to be a bromide set, likely a bonus for ordering all types of Kazuki Kato's calendar. I have stored it in a dark place after purchase. Please refrain from purchasing if you are sensitive to the condition, as it is stored by a private individual. I will pack aluminum and acrylic items with bubble wrap and waterproof packaging. For items that can be folded, I will reinforce them with cardboard and waterproof packaging before shipping.