Many of our customers miss the old incandescent ‘light bulbs’.  From the instant start, to the excellent color rendering, to the ease of reading with it.  Good news!

MIT: New Incandescent Light Bulbs Are More Efficient Than LEDs

Over 100 years old https://www.quora.com/What-is-the-oldest-lightbulb-in-continuous-use

Over 100 years old
https://www.quora.com/What-is-the-oldest-lightbulb-in-continuous-use