1.5" x 1.5". Thin and lightweight metal. Unsure of age, but most likely the 1980s or so. No major flaws or defects. See all photos - they are part of the description. Measurements are approximate. Comes from a smoke-free home. Cats live here but don't interact with product. I cannot guarantee fur will not transfer. I reuse packaging to reduce waste and our environmental impact. This also cuts costs for buyers. Thank you for understanding.