Golden Mail
Chest:
Battleforge Armor, BOE World Drop
Shirt:
Red Linen Shirt: BOE. Tailoring
Gloves:
Glimmering Mail Gauntlets: BOE World Drop
Waist:
Swiftgear Belt: Quest Reward, Wetlands
Legs:
Glimmering Mail Legguards: BOE World Drop
Feet:
Sparkleshell Sabatons: BOE World Drop
Cloak:
Battleforge Cloak: BOE World Drop
Right Hand
Reconstructed Sword: Quest Reward, Wetlands
Left Hand:
Battleforge Shield: BOE World Drop
This very attractive set set makes heavy use of the BOE Battleforge and Glimmering Mail sets, these drop in the mid to late 20s (I have seen the battleforge set drop moderately frequently in runs of Gnomeregan). Both of these sets are quite nice looking, but depending on the vagaries of differing server's economies may be somewhat tricky to obtain via the auction house.
My personal variant of this set that I have been working on for a while and is more Ironforge Centric ;) and swaps out the Battleforge Shield for the Royal Treasury Courier's Shield, an Ironforge Tabard, Battleforge Shoulderguards, Glimmering Mail Greaves and a Fel Iron Hatchet
Silver Knight's Colors
Shoulder:
Crusader's Pauldrons: BOE World Drop
Chest:
Overlord's Chestplate: BOE World Drop
Shirt:
Stylish Black Shirt: , Purchasable, Lisbeth Schneider, Stormwind
Wrist:
Overlord's Vambraces: BOE World Drop
Gloves:
Overlord's Gauntlets: BOE World Drop
Waist:
Overlord's Girdle: BOE World Drop
Legs:
Overlord's Legplates: BOE World Drop
Feet:
Overlord's Greaves: BOE World Drop
Cloak:
Archivist Cape: BOP Drop, Instructor Galford, Stratholme
Tabard:
Tabard of the Argent Crusade: Argent Crusade faction vendor in Icecrown, requires friendly reputation status.
Left Hand:
Highlord's Favor: Quest Reward: Western Plaguelands
Right Hand:
Goblin Nutcracker: BOE World Drop
Here is an alternate Shoulder style utilizing Blackforge Pauldrons, BOE World Drop