Zero

Level 1 of the Dungeon
(1, -2, D:1)
  3 stones
(22, -3, D:1)
  a +0 sling
(44, -2, D:1)
  a +0 club
(49, 32, D:1)
  2 stones
(52, 41, D:1)
  a +0 whip
(59, 28, D:1)
  a +0 dagger
(61, 35, D:1)
  a +0 club

Level 2 of the Dungeon
(0, 0, D:2)
  a +0 short sword
(1, -25, D:2)
  a +0 leather armour
(14, 9, D:2)
  a +0 scale mail
(15, -25, D:2)
  a +0 plate armour
(15, 8, D:2)
  a +0 spear
(16, 6, D:2)
  a +0 chain mail
(17, 8, D:2)
  an adder corpse (skeletalised by now)
(24, -23, D:2)
  a +0 dagger
(31, -5, D:2)
  a +0 mace
(34, 0, D:2)
  a +0 dagger
(35, 3, D:2)
  a +0 club
(41, -26, D:2)
  a +0 club
(42, 4, D:2)
  a +0 club

Level 4 of the Dungeon
(0, 0, D:4)
  a +0 scale mail
(2, 2, D:4)
  a scroll of identify

Level 5 of the Dungeon
(0, 0, D:5)
  a potion of invisibility
(0, 6, D:5)
  a +0 falchion (still there?)
  an orc corpse (still there?)
(1, 7, D:5)
  a +1 mace of holy wrath
(8, 7, D:5)
  a scroll of silence
(10, 5, D:5)
  a +0 leather armour
(15, 12, D:5)
  12 gold pieces
(16, 6, D:5)
  an orb of mayhem
(20, 8, D:5)
  2 potions of heal wounds
(21, -3, D:5)
  a +0 scale mail

Level 6 of the Dungeon
(21, 0, D:6)
  a +0 war axe
  a +0 leather armour
(22, -2, D:6)
  a +0 whip (still there?)
  an orc corpse (still there?)