The Hidden Blade is a sleek, retractable dagger designed for stealth assassinations, featuring a sharp, single-edged blade that extends from a concealed bracer. The bracer is crafted from dark, aged leather with subtle Viking engravings, housing a mechanical mechanism with visible gears and springs for realism. The blade itself is made of polished steel with a slight curve, reflecting light subtly to maintain its hidden nature, while the overall design balances functionality with historical authenticity.