We bought these a while back but they just didn't fit with what we needed. All 5 are still in the packaging except one whose packaging is a little ragged. The bulbs are all unused. They have 2 pins at each end. 

Preferably selling all 5 as a set but open to offers for individuals (but no guarantee). Pricing is based off professional advice of £20 per bulb. 

Message if any extra details are needed. Since they are fragile, collection only.