AP Mace: a mace or Warhammer can be made even more dangerous to defeat plate armor, gaining a +1 to damage against targets wearing that armor (or monsters with thick shells (like turtles, beetles or crabs). 400gp.
Broad-Blade Spear a high-quality spear with a broad stabbing head. When used in 2-hands it inflicts an additional +1 damage to human/humanoid/demi-human targets in leather or no armor, or mammalian animals with AC 6 or worse (like giant weasels, wolves, boar etc.). 400gp.
Heavy War Bow: a longbow or composite bow meant for only the strongest of men. It requires a 15+ in STR to use it, gets +1 to damage rolls.
Iron-Wood Mace: this is a mace made entirely of a rare, ultra-hard wood. It acts like a normal mace in all respects, but cannot be destroyed by a rust monster or affected by any magic that affects metal only. 250gp.
Mail-piercing arrows: such arrows get +1 to damage against targets in chainmail or reptilian creatures with scaly hides (like dragons, giant lizards and lizardmen). 200gp for 20 arrows.
Mail-Piercing Spear: a spear can be made with a narrow, mail-piercing head that offers the user a +1 to damage against enemies wearing chainmail or reptilian monsters with scaly hides (like dragons, giant lizards and lizardmen). 400gp.
Sharp-Bladed Sword: a sword or short sword can be made with a superior cutting edge. Such a blade scores +1 to hit against humans/humanoids/demi-humans in leather armor or no armor at all, and animals with an AC of 7 or worse (like wolves, camels, giant weasels, most hounds etc.). 400gp.