Osram Sylvania Ultra iQ
From SecuriWiki
http://assets.sylvania.com/assets/Documents/RETRO059.35d42b0b-c024-4d44-b26e-92b990e58e4f.pdf
Please note that at the moment, this bulb is only available from Lowe's in the US - http://www.lowes.com/pd_484719-3-78960_4294713508