Hey Pojo,
    Recently I have done alot of research on Yugi's battle city deck. I  managed to find all the cards except for 7. I would seriously appreciate if you could post it I watched online episodes, japanese show guides, etc and have managed the following:
 
(Also Pojo I am working on a accurate list of Joey and Kaiba's BC decks please respond if you would like to post them)
 

Yugi’s Battle City Deck

 

Monsters

Gazelle the Mythical King of Beasts

Berfomet

Dark Magician

Dark Magician Girl

Alpha the Magnet Warrior

Beta the Magnet Warrior

Gamma the Magnet Warrior

Valkrion the Magna Warrior

Buster Blader

The Beast of Gilfer

Big Shield Gardna

Kuriboh

Slifer the Sky Dragon

Cyber Jar

Summoned Skull

Celtic Guardian

 

 

Fusions

Chimera the Flying Beast

 

Magics

Monster Reborn

De-Spell

De-Fusion

Polymerization

Brain Control

Multiply

Exchange

Mystical Space Typhoon

 

Traps

Light of Intervention

Spellbinding Circle

Magic Cylinder

Fairy’s Hand Mirror

Chain Destruction

Time Seal

Lightforce Sword

Dust Tornado

Magical Hats

Shift
 
(Note: Some of the cards Yugi as not used yet and some are only shown in his hand)