A lv{0:d} dragon scale is an item in Evony TKR (The King's Return). It can be found after killing certain monsters or bosses, with some of them listed below.
The description of Lv{0:D} Dragon Scale in Evony TKR says:
Necessary material to craft Equipment.
Lv{0:D} Dragon Scale is known to drop from a number of bosses or monsters upon killing, including Fafnir, Viking Icebreaker, Viking Berserker, Viking Chief and Medium Cerberus.
Note: This list may be incomplete.