As per SMC guidebook 2007 on Perseverence Buttress

ClimberDateStyle
Hidden 01/Jan/12 2nd
Hidden 01/Jan/12 2nd
MPSBunny 01/Jan/12 Lead
AndyP 16/Feb/08 AltLd O/S

Hardly in conition, grade III when this lean. The snow at the top however was superb so a sporting exit was climbed through the undercut cornice. Left a peg in at the belay (about 15m below the top). Turf and ice were both iron hard. Stunning conditions overhead; Blue sky, hardly a breath of wind and cold.

with Ian H.
Voting
High II/III
Mid II/III
Low II/III
High II
Mid II
Low II
High I/II
Mid I/II
Low I/II