Hi all - I'm so thankful that I found this forum.  We have a Pottery Barn called "Heart Marquee Complete Lamp", the bulbs are slowly dying and we can't find replacements.  I've called PB and they tell me that they can't help and I should be able to find them at my local store - HA!
The bulb has an 11mm base, the bulb itself is 30mm x 30mm.  The markings on the base are 120V 5W China and something else I can't make out, but it looks like SL.  I've been googling for an hour and a half, no luck.
Any help would be greatly appreciated.