This is duel pull with a 34.9 band but it includes the spacer so it can be used on the next size down s/tube (31.9 iirc). Very little use, see pictures.
Shimano Deore XT Front Derailleur 9-Speed
Shimano Deore LX Front Derailleur 9 Speed 34.9 Clamp Top Bottom Pull
Shimano Deore LX Front Derailleur 9 Speed 31.8 Clamp Top Pull
Shimano Deore XT Front Derailleur FD-M770 Triple Top Pull / Top Swing 34.9mm 9 speed
