Your search for "Dimir Signet 263" revealed the following:
Dimir Signet (SCD) from Starter Commander Decks, available at 401 Games Canada. Rarity: Uncommon Finish: Normal Artist: Raoul Vitale Card Text:1, T: Add UB.
Dimir Signet - Dan Frazier is Back: Allied Signets (SLD) from Secret Lair Drop, available at 401 Games Canada. Rarity: Rare Finish: Normal Artist: Dan Frazier Card Text: Dan Frazier: Allied Signets1, T: Add UB.
Dimir Signet - Dan Frazier is Back Secret Lair (Etched) (SLD) from Secret Lair Drop, available at 401 Games Canada. Rarity: Rare Finish: Foil Artist: Dan Frazier Card Text: Dan Frazier is Back: The Allied Signets1, T: Add UB.
CONTENTS 1x Old Frame Azorius Signet 1x Old Frame Dimir Signet 1x Old Frame Gruul Signet 1x Old Frame Rakdos Signet 1x Old Frame Selesnya Signet