Please read. This Listing includes:
1 Precision Lamp for optical devices - 750 T12P - 120V / one bulb
2. Projection Lamp Bulb - 1M/ T12p - 120V - / two bulbs
Total listing is for five bulbs. I do not know if they are all working. They seem to be in good shape. I have seen one bulb listed for 35.00. You need to take a chance I would think that most of them work.