Read from the World of Warcraft client build files.
Where Kryll's Copper Coin Fits
Items That Share Kryll's Copper Coin's Icon
Kryll's Copper Coin uses icon file 237283, which 58 other items also use. The 8 closest by item ID:
Krasus' Copper CoinID 43712 · Miscellaneous"My prayers go out to my brothers and sisters who still suffer in the heart of Grim Batol. I WILL free them."
Blizzard numbers items as they are created, so the named items next to ID 43713 (43708 to 43718) were usually added in the same batch as Kryll's Copper Coin: the same quest line, zone, vendor or reward set.
Elling Trias' Copper CoinID 43708 · Miscellaneous"Being a rogue is hard work. Someday I hope to pursue my life's one true passion..."
Krasus' Copper CoinID 43712 · Miscellaneous"My prayers go out to my brothers and sisters who still suffer in the heart of Grim Batol. I WILL free them."