Disclaimer:
This threat is the result of a small brainstorm we had in the Warrior Transmogrification threat. There's a problem out there that some unique looking craft able items have become extremely rare because their recipes aren't obtainable any more or are an extremely rare drop from old world creatures that get don't get killed that often any more. The aim is to create a list of those recipes and to find people who still know them. (Ideally we end up with at least one crafter per region)
Blacksmithing:
B01: Darksoul: Breast Shoulders Leggings (they were a reputation reward for The Zalandar Tribe in Vanilla, the Vendor was removed with Cataclysm)
B02: Ornate Mithril: Helm Breast Boots Pants Gloves Shoulder (Gained from the Mithril Order, the Vendor was lost with Cataclysm)
B03: Felsteel Longblade (the recipe is a super rare drop from only 9 mobs in TBC, still available but rarely found)
B04: Bloodsoul Set: Breastplate Shoulders Gauntlets
B05: Golden Scale Gauntlets
B06: Enchanted Thorium Leggings
B07: Truesilver Breastplate
B08: Truesilver Gauntlets
Leatherworking:
L01: DeviateScale: Belt Cloak Gloves (Quest Reward in the wailing caverns, lost with Cataclysm)
L02: Stormshroud Gloves (Rare drop that was removed in Cataclysm)
L03: heavy-scorpid-set (Rare drops Recipes)
L04: Hide of the Wild
L05: Stormshroud Gloves
L06: Wolfshead Helm
L07: Primal Batskin-Set: Jerkin Bracers Gloves
L08: Blood Tiger-Set: Breastplate Shoulders
L09: Girdle of Insight
L10: Red Dragonscale Breastplate
L11: Shifting Cloak
Engeneering:
E01: bloodvine-lens
E02: Bloodvine Goggles
Tailoring:
T01: Belt of the Archmage (Was contained in a Cache in Diremaul, gone with Cataclysm)
T02: Glacial Gloves (Classic Naxxramas, lost when it got moved to Northrend)
T03: Chromatic Cloak
T04: Inferno Gloves
T05: Robes of Arcana
Masters:
NA
Konteil Blades Edge L01 L02
TheWorkingTitle Horde T01 T02
Giovannisup69 Horde E01
Kadenzza Alliance Tanaris/Greymane L01 L02 L03 L04 L06 L07 L08 L11 B02 B05 T03
EU
Gehco Horde Argent Dawn B01 B02 B03 B04 L01 L02 L03 L05 E01 E02 EU Alliance Defias Brotherhood T01
Unlimited Power Horde: E01 E02 Alliance L01 L02 L03(shoulder, Leggings) L04 L05 L06
Nathanyel Kel'Thuzad B01 B02 B04 L01 L02 L03(Bracers) L06
Nightstalker Blackhand B01 B02 B04
Etassadar Zirkel-Des-Cenarius B01 B02 B04
Chonar Shadowsong B01 B02 B04
Sting Swab Tarren Mill horde B01 B02 B03 B04 Taurimbo Ragnaros horde L01 L02 L03 L05 L06 L09 Emsarrev, Al'Akir horde E01 E02
Triden Triden Alliance Alleria/Khadgar B01 B02 B03 B05 B07 B08
aunt Cendre Vermiflux Hyjal L01 L02 L03 L04 L06 L07 L08 L11 Goto hyjal T01 T02 T04 T05 Catchy hyjal B02 B03 (L08 in the bank ready to be sold)
oldgeezer Gnude Earthen Ring T05
SA
NONE
... to be continued...