Philips SL*18 and similar
Lighting-Gallery.net - My Lamps SL/Comparison between two Philips SL Prismatic 18W with base B22 and E27
Phillips SL-18/27 18w 120v Earth Light | eBay
Compact fluorescent lamp | Science Museum Group Collection
Philips SL*18R
Philips SL*18 Prismatic Compact Fluorescent Lamp
Philips SL25 prismatic - YouTube
Philips SL*18 Demonstration Lamp
1994 Philips SL Prismatic 18W daylight - YouTube
PHILIPS SUPER ENERGY SAVERS SL*18=75 WATT - NOS | eBay
Philips SL*18 Demonstration Lamp
REPLACEMENT BULB FOR PHILIPS SL/018, SL18, SL18/27, SL18/O18 | eBay
Philips SL*9 CFL with black base, early rare example of original CFL or energy saver design dating back to early 1980s, later lamps had a white base Stock Photo - Alamy
Lighting-Gallery.net - My Lamps SL/Philips SL 18 Comfort (side A)
Lighting-Gallery.net - Traveling Acquisitions/Philips SL*18 Earth Light
Philips SL*18R
Lighting-Gallery.net - Compact Fluorescent Lamps CFL/Philips SL*18. 18W 900 Lumen. 220V 50 Hz. 1992. Made in Poland.
Lighting-Gallery.net - Compact Fluorescent/Philips SL*18
PHILIPS SL-18 CFL lamp - YouTube
Tech Flashback: Philips SL*13 (13W/240V) “Compact” Fluorescent Lamp | Gough's Tech Zone
Lighting-Gallery.net - My Lamps SL/Philips SL 18 Prismatic
Philips SL*18 Demonstration Lamp
David Savery Electrical Services Ltd. - My exciting historically significant light bulb!
Tech Flashback: Philips SL*13 (13W/240V) “Compact” Fluorescent Lamp | Gough's Tech Zone
Lighting A Revolution: Compact Fluorescent Lamp Drawing
