1491 Dual Defender is a Castle set released in 1992. It includes 45 pieces. It includes a twin catapult and two Black Knights. The catapult is mounted on a 4x4 turntable which is mounted on a small green baseplate. The catapult arms can be operated independently. There are two spears on the catapult and several light grey cylinder pieces for ammo. This set is often listed as part of the Crusaders theme although the soldiers carry Black Knights shields. Check my sellers list for more Lego sets. Buy multiple sets & get a better deal. I will also trade for Lego Star Wars, Batman, Mindstorms, Technic + Power Functions, Castle, Lord of the Rings & The Hobbit sets. Please email to arrange your purchase. Thank You. š·