Darksteel introduced Skullclamp on 6 February 2004 as DST #140, an uncommon illustrated by Luca Zontini. Both nonfoil and traditional foil are catalogued. A foil copy with this set identity can therefore be an original printing, rather than necessarily a later promotional reprint.
From the Vault: Exiled #12 arrived in August 2009. It retained Zontini’s art but used a foil-only premium boxed presentation and mythic rarity. That later rarity does not make the original a rare or mythic. Commander 2011 #260 returned to an uncommon, nonfoil deck edition with the familiar artwork.
Warhammer 40,000 Commander introduced Helge C. Balzer’s interpretation in October 2022. Ordinary #248 is nonfoil-only; the Collector’s Edition surge-foil record is #248★. These are distinct catalogue identities, not an optional surge switch available on every Skullclamp.
Secret Lair #1112, dated November 2022 in the catalogue, credits Yoji Shinkawa and offers nonfoil and foil. It changes the illustration as well as the presentation. These selected milestones are not an exhaustive list of Commander deck reprints, languages or later artist drops.