Load the media.pk2 on extractor, extract textdata_object.txt (server_dep\silkroad\textdata) and search for "gold coin"
result
Code:
1 SN_ITEM_ETC_SD_TOKEN_01 Copper Coin
1 SN_ITEM_ETC_SD_TOKEN_02 Iron Coin
1 SN_ITEM_ETC_SD_TOKEN_03 Silver Coin
1 SN_ITEM_ETC_SD_TOKEN_04 Gold Coin