Your search for "Thopter // Copy Double-Sided Token 12 // 1" revealed the following:
Thopter Assembly (DDU) from Duel Decks: Elves vs. Inventors, available at 401 Games Canada. Rarity: Rare Finish: Normal Artist: Svetlin Velinov Card Text:FlyingAt the beginning of your upkeep, if you control no Thopters other than Thopter Assembly, return Thopter Assembly...
Thopter Foundry (Foil) (2XM) from Double Masters, available at 401 Games Canada. Rarity: Uncommon Finish: Foil Artist: Ralph Horsley Card Text:1, Sacrifice a nontoken artifact: Create a 1/1 blue Thopter artifact creature token with flying. You gain 1 life.
Copy // Thopter (008) Token (Foil) (T2XM) from Double Masters, available at 401 Games Canada. Rarity: Token Finish: Foil Card Text:This token can be used to represent a token that's a copy of a permanent.//ThopterFlying
Thopter (008) Token (T2XM) from Double Masters, available at 401 Games Canada. Rarity: Token Finish: Normal Artist: Andrew Murray Card Text:Flying
Thopter (026) Token (T2XM) from Double Masters, available at 401 Games Canada. Rarity: Token Finish: Normal Artist: Richard Wright Card Text:Flying