Some Gold Coins Symbols have to be unlocked by completing story mode Missions with 100% in Legend Diary... to get 100 before you select the level Click on Check Legend and Also Treasure event. Some levels require you to play as specific characters to complete treasure events to complete the Legend log. Others Gold Coin Symbols are obtained by defeating Bounty's in Dream log and clearing Dream log.

Unlockable	How to unlock
Absolute Justice	Clear "The war conclusion" 80%
Ark maxim	Clear Adventures on kami's island" 100%
Arlog's Mark	Clear "Arlongs Park" 80%
Baroque works mark	Clear "showdown at Alubarna" 80%
Beli	Clear "Arlongs park" 100%
Buggy Balls	Clear "BUGGY THE CLOWN" 100%
Clima-Tact	Clear "Skull and cherry blossom" 80%
Color of Arms Haki	Get 2400"!"s in any number of battles in dream log
Conqueror's Haki	Get all S Ranks in Dream log
D	Clear "The war conclusion" 100%
Devil Fruit	Clear "ROMANCE DAWN" 100%
Doflamingo's Mark	Clear "punk Hazard" 80%
Dr. Kureha	Clear "Skull and cherry blossom" 100%
Dragon Claw	Clear "Dressrosa Trembles" 80%
Electric Guitar	Clear "Island of New Beginings" 80%
Four Emperors	Complete final island in the dream log
Galaxy Slingshot	Clear "CAPTAIN KURO OF THE THOUSAND PLANS" 80%
Going Merry	Clear "CAPTAIN KURO OF THE THOUSAND PLANS" 100%
Iceburg	Clear "The City of water, water7" 80%
Impel Down	Clear "underwater Prison impel down" 100%
Lucci Human-Beast	Clear "Pirates vs Cp9" 70%
Magic Clima-Tact	Clear "Adventures on fish-man island" 80%
Marine Admiral	Defeat all strong enemies on islands in dream log
Marine Ship	Clear "fist of love"
Marines	Clear "The Legend Begins" 100%
Morias mark	Clear "adventure on Ghost island" 80%
New World Log Pose	Clear "Island of New Beginings" 100%
Observation Haki	Dfeat 3600 enemies in any number of battles in dream log
Pirate Warriors	Clear "Dressrosa Trembles" 100%
Poneglyph	Clear "Pirates vs Cp9" 100%
Punk Hazard	Clear "punk Hazard" 100%
Rayleigh	Clear "Adventures on the Archipelago of Dancing Soap Bubbles" 100%
Revolutionary Army	Clear 50% islands in dream log
Roger's Mark	Clear "Summit battle" 100%
Sengoku	Clear "Summit battle" 80%
Seven Warlords Of the Sea	Clear 75% islands in dream log
Skypiea	Clear "Adventures on kami's island" 80%
Sniper Emblem	Clear "The City of water, water7" 70%
The four monsters	Clear all 25% Isnalds in dream Log
Thousand Sunny	Clear "The City of water, water7" 100%
Thriller bark	Clear "adventure on Ghost island" 100%
Vivi	Clear "showdown at Alubarna" 70%
Wado Ichimonji	Clear "ROMANCE DAWN" 80%
Whale Shark	Clear "Adventures on fish-man island" 100%
World Government	Clear "the 100 million beli man" 100%
World Government	Clear "Island of New Beginings" 70%
X (crew Symbol)	Clear "showdown at Alubarna" 100%
Yubashiri	Clear "Pirates vs Cp9" 80%
Zeff	Clear "The Don's offer" 100%